FR3079694A1 - READING / WRITING DATA WITH DEPORTE TREATMENT - Google Patents

Abstract

A reader (1) for the conversion of multimedia content comprising: - a read head (11) arranged to read multimedia content data written on a data medium (3), and - an output (13) suitable for transmitting a signal carrying the data (7) from the read head (11), in a format identical to that of the storage on the data medium (3), and to a third computer device (5). A conversion device compatible with the reader. A computer device compatible with the reader. A method of converting multimedia content.

Description

Read / Write data with remote processing

The invention relates to the field of converting data stored on data carriers.

The evolution of data storage techniques has made certain types of data storage obsolete, especially when data must be stored there in analog form. For example, mechanical supports such as groove or microgroove discs (commonly called "vinyls") and magnetic supports such as magnetic tapes are no longer used on a large scale.

For the same reasons, assistive devices for reading such media are becoming scarce. Spare parts to repair such devices are at least as rare. Even when such devices are functional, they often remain unusable because they are incompatible with the most common recent devices. For example, a video recorder capable of playing a so-called “VHS” cassette usually has, at least in Europe, an audio-video output connector of the “Peritelevision” type. However, recent televisions are generally devoid of a corresponding input connector, especially in France where the legal obligation to integrate a "Péritélevision" connector on the television has been repealed.

The simple reading of such data carriers is therefore complex and costly. Transposing such data to a more contemporary and customary medium, generally by switching from an analog format to a digital format, is all the more complex and expensive.

There are suitable devices, commonly called "converters", intended to read a type of analog medium and provide a corresponding digital file as output. However, such devices are often compatible with only one type of original analog medium and remain expensive. It is therefore necessary to obtain as many devices as there are types of analog media that one wishes to convert.

The invention improves the situation.

A reader is proposed for converting multimedia content comprising:

a read head arranged so as to read multimedia content data written on a data medium, and

- an output capable of transmitting a signal carrying the data (7) from the read head, in a format identical to that of storage on the data medium, and intended for a third-party computing device.

Such a reader makes it possible to read data stored on one or more types of media and to provide, as an output, a “raw” signal as output from the read head, or optionally converted into digital form, but without the data are encoded in a different multimedia format than the original one. Thus, multimedia coding, typically in an audio and / or video stream, can be implemented by a third-party device, such as a computer or a multifunction telephone ("Smartphone") connected downstream to the output of the player. The reader can therefore be devoid of component and electronic card usually integrated into known conversion devices. By dissociating the function of reading media and the function of converting data formats (coding or transcoding) and ensuring these two functions on two separate devices, it is therefore possible to reduce the unit cost of the reader compared to a multifunction device . This is all the more advantageous since the multimedia coding function can generally be provided by conventional devices (computer or smartphone), dispensing the user from acquiring such a device specifically for such an operation. The conversion offset in a device separate from the reader also allows a larger choice of conversion format and / or the updating of the available conversion formats and / or the addition of conversion formats.

According to another aspect, a device for converting multimedia content separate and remote from a reader is proposed, arranged so as to read data from multimedia content written on a data medium comprising:

- an input capable of receiving a signal emitted by the reader, and

- at least one processing device arranged to encode the data carried by the signal from the input into a multimedia stream.

According to another aspect, a separate computing device is proposed which is remote from a reader arranged so as to read multimedia content data recorded on a data medium comprising:

- an input capable of receiving a signal emitted by the reader, and

- at least one processing device arranged to encode the data carried by the signal from the input into a multimedia stream.

According to another aspect, a method for converting multimedia content is proposed, implemented by a conversion device, comprising the following steps:

a) receive at the input of the conversion device and from a third-party reader a signal carrying data read from multimedia content;

b) identify a multimedia encoding format or a list of multimedia encoding formats;

c) coding the data carried by the received signal in a multimedia stream (9) by selecting the multimedia coding format according to the previous identification.

According to another aspect of the invention, the applicant proposes a computer program comprising instructions for the implementation of the method as defined herein when this program is executed by a processing device. According to another aspect of the invention, the applicant proposes a non-transient recording medium, readable by a computer, on which such a program is recorded.

The following features can optionally be implemented. They can be implemented independently of each other or in combination with each other:

- The reader also comprises an analog-digital converter arranged so as to convert an analog signal from the read head into a digital signal to be transmitted via the output. This makes the reader compatible with a large number of computer devices, in particular those without input or means to process analog signals.

- The reader further comprises a receptacle and a motor jointly arranged so as to receive a data medium and in such a way that the activation of the motor causes relative displacement of said data medium and of the read head. The reader also comprises an input capable of receiving motor control signals from a third-party control device. This makes the reader compatible with a large number of analog data carriers, in particular by making it possible to adapt the scrolling speeds at will from the computer device. The motor can be controlled automatically by software, which eliminates the need for the user to manually choose a suitable scrolling speed.

- The reader also comprises at least one optical and / or mechanical sensor capable of detecting the physical format of the data medium and / or the multimedia coding format of the data so as to identify said formats. The output is further capable of transmitting data relating to the formats detected. This makes it possible to adapt the multimedia coding implemented by the computer device in a substantially automated manner as a function of the additional data received from the reader.

- The reader also includes:

- an input capable of receiving a signal carrying data, in a format identical to that of storage on a data carrier, and coming from a third-party computing device, and

- at least one writing head arranged so as to write multimedia content data received on the data medium. This allows various data to be saved on a data carrier in a selected transcoding format.

- The processing device is also arranged so as to adapt the multimedia coding as a function of at least one item of data relating to the physical format of the data medium and / or of the multimedia coding format of the data read by the reader. This makes it possible to select a multimedia coding as a function of data obtained indirectly by the reader rather than by an analysis of the signal received at the input. Thus software processing steps of the input signal are rendered unnecessary.

- The processing device is arranged to receive, from at least one of the following sources, said at least one data item relating to the physical format of the data medium and / or to the multimedia coding format of the data read by the reader:

- a man-machine interface of said computer device comprising and / or constituting the conversion device;

- an output of the reader capable of transmitting data drawn from a sensor of the reader;

a detector of the conversion device or of the computer device arranged to identify a multimedia coding format or a list of multimedia coding formats as a function of the signal received as input. This makes it possible to preselect the type of multimedia coding to be implemented according to the information available. The successive implementation of several multimedia encodings in a random manner is avoided. The implementation of multimedia coding for which the multimedia stream is impossible to obtain or of poor quality is avoided.

- The multimedia content conversion device includes:

- an output capable of transmitting a signal to a reader comprising a write head on a data medium, and

- At least one processing device arranged so as to encode the data carried by a multimedia stream into a signal whose data is in a format identical to that of storage on the data medium. This makes it possible to provide the data to be stored in a format directly suitable for storage, without the need for the read head to be associated with conversion equipment.

- The conversion process includes, if the received signal is a digital signal, the following steps prior to step c):

- identify a multimedia encoding format or a list of multimedia encoding formats by means of which the multimedia content has been previously encoded;

- decode the data carried by the received signal according to the previous identification, and provide the decoded signal in step c) to code the decoded data. This converts the format of the data.

- The conversion process includes after step a), step: if the received signal is an analog signal, convert said signal into a digital signal. This facilitates post-processing of multimedia data.

Other characteristics, details and advantages of the invention will appear on reading the detailed description below, and on analysis of the appended drawings, in which:

- Figure 1 shows a system according to an embodiment of the invention; and

- Figure 2 shows a system according to another embodiment of the invention.

The drawings and the description below essentially contain elements of a certain nature. They can therefore not only serve to better understand the present invention, but also contribute to its definition, if necessary.

The term “recorder” is used here by reciprocity with the term “reader” and the term “writing” by reciprocity with the term “read”. Writing includes in particular the mechanical engraving of a disc, the laser engraving of a CD or even the controlled polarization of an area of a magnetic tape.

Reference is now made to FIG. 1. A system 100 here includes a reader 1, for example an analog reader and a computer device

5. The reader 1 and the computing device 5 are two separate devices from each other and distant from each other.

The reader 1 is intended for the conversion of multimedia content. By multimedia content is meant here audio and / or video content. Alternatively, the multimedia content may also include other types of content, for example text or computer programs.

The reader 1 is designed to receive a data medium 3. Such a data medium 3 may comprise a mechanical medium, such as a groove disc or microgroove, commonly called “vinyl”, and usually used to contain content data audio. Such a data medium 3 can comprise a magnetic medium, such as a magnetic tape. Such magnetic tapes are generally in the form of coils housed in a protective container of parallelepiped shape called “cassettes”. The most widespread examples are in particular the “cassettes” usually for music recordings, the “microcassettes” and “pico-cassettes” for the recording of the voice (by dictaphone) and the videocassettes for the recording of videos with standards. and various standards, among which we will cite for example the "8 mm", the "super 8", the "Hi-8", the "Video 8", the "VHS", the "Betamax" and the "V2000".

The reader 1 comprises at least one power supply input (not shown), for example a housing capable of receiving a battery and / or a dedicated input socket. In the examples described below, the power input is physically combined with an output 13 described below (for example of the USB type).

The reader 1 comprises at least one read head 11 and one output 13. The read head 11 is arranged so as to read multimedia content data encoded on the data medium 3. The read head 11, of technology known in as such, is selected according to the type of media 3 that the reader 1 is intended to receive, for example a magnetic sensor for magnetic tapes and / or a piezoelectric sensor for groove disks.

The output 13 is capable of transmitting a signal carrying the data 7 from the read head 11, in a multimedia coding format identical to that of storage on the data medium 3, and intended for a third-party computing device 5. By “multimedia coding format identical to that of storage”, it is meant here to specify that no multimedia coding operation is implemented in the reader 1, between the read head 11 and the output 13. The output data (relating to multimedia content) are therefore in a raw reading format, that is to say in the coded form used to store them on the data medium 3. This constitutes a notable difference with the commercial devices for which electronic and / or computer processing is systematically applied to the signals immediately downstream of the read head 11. It will further be noted that the use of the term “coding” refers, for example, to video coding or to voice coding . In this context, the coding mentioned here should not be confused with the term "coding" which can sometimes refer to error correction operations during transmissions.

The absence of multimedia coding format conversion between the signal from the read head 11 and the output 13 does not preclude an optional conversion from analog to digital or vice versa. Thus, in embodiments, the reader 1 further comprises an analog-digital converter ("ADC") arranged so as to convert an analog signal from the read head 11 into a digital signal to be transmitted via the output 13. When a signal carrying the data coming from the read head 11 is supplied at output 13, in a format identical to that of storage on the data medium, this means an unprocessed format. For example, the format written data is understood to mean analog data directly coming from sensors, or in an analog multimedia coding format (PAL, SECAM, VHS for example) or digital (DAT, MP3 for example).

In the example described here, the outlet 13 comprises several forms. The output 13 includes an external physical connector, for example according to one of the USB standards such as a female USB type C connector. In these cases, the connection between the reader 1 and the computer device 5 can be implemented by at least one cable terminated by the corresponding connector. In the example described here, the output 13 further comprises wireless communication modules, for example by short-range or very short-range radio frequencies such as the Wifi and Bluetooth standards.

Alternatively, the output 13 can include other types of connections or just one of them. For example, a reader 1 provided only with a physical connector (devoid of wireless communication module) has a lower manufacturing cost and makes it possible to dispense with many components usually necessary to operate a wireless communication module. In addition, such a reader 1 uses less energy.

In the embodiment shown in FIG. 2, the reader 1 also comprises a receptacle 15 and a motor 17 jointly arranged so as to receive a data medium 3 and so that the activation of the motor 17 causes relative displacement of said support 3 and of the read head 11. In an example designed to receive magnetic tape cassettes (commonly called “audio cassette”), the rotation of the motor 17 drives one of the coils so that the magnetic tape moves along the read head 11 in a manner known per se. In an example intended to receive groove discs, the rotation of the motor 17 causes the rotation of the disc while the read head 11 slides in the groove in a manner known per se.

In the examples described here, the reader 1 is itself devoid of the motor control part 17. In operation, the motor 17 is controlled by a computer device to which the reader is connected

1. To this end, the reader 1 further comprises an input 19 capable of receiving control signals 50 from the motor 17 from the control device 5, as shown in FIG. 2. In the examples described here, the computer device 5 has a double function: receiving data from output 13 of reader 1 and controlling the motor 17 via input 19. As a variant, the two functions are provided by two separate computer devices. As a variant, the reader 1 comprises a user interface, for example in the form of a panel comprising buttons. In such variants, the control device 5 can be devoid of the function of controlling the motor 17 via the input 19.

In the embodiments of the reader 1 comprising an input 19, at least one of the external physical connectors and / or of the wireless communication modules can act as input 19 and output 13 for the reader 1, either alternatively or simultaneously.

In embodiments, the physical connector can also form a power input for the reader 1, for example in order to be supplied via the computer device 5 to which it is connected.

In the example described here, the reader 1 also comprises at least one optical and / or mechanical sensor capable of detecting the physical format of the medium 3 and / or the multimedia coding format of the data stored on the medium 3 so as to identify said formats. The output 13 is then further able to transmit data relating to the detected formats, in addition to the multimedia content data. For example, mechanical sensors make it possible to recognize a particular physical format of the support 3 when the reader 1 is physically able to receive several types of support. For example, a mechanical sensor can be adapted to mechanical coding by notches on the back of the audio cassettes and making it possible to recognize the different types of cassette known under the designations "Type I", "Type II", Type III "and" Type IV " .

An optical sensor, for example a photosensitive cell, can make it possible to detect the occupation or not of a space, for example in the receptacle 15. This makes it possible in particular to deduce therefrom the size of the support 3 which is there.

The computing device 5 comprises at least one processing device 51 and an input 53. By “processing device” (here is meant a member capable of executing a computer program for the implementation of a process, the member including , for example, at least one processor or a chip. The processing device 51 comprises for example the processor of a computer or of a multifunction telephone ("Smartphone"), for example a graphics processor (or GPU for "Graphies Processing" Unit ") and / or the chip of a graphics card or a sound card. The processing device 51 can be multifunctional and in particular implement the usual processing for a graphics card, image reproduction, calculations coding / decoding and / or calculations for the implementation of artificial intelligence. The use of a chip for the implementation of the conversion can allow a hardware acceleration in order to achieve faster execution compared to a single processor to which other ancillary functions are generally assigned.

In variants, the computing device 5 is equipped with both a processor and a chip, for example a graphics card chip (computers or smartphone for example). In such variants, the remote data conversion processing can be implemented by the chip rather than by the processor.

Input 53 is suitable for receiving the signal sent from output 13 of the reader

1. The processing device 51, or all of the processing devices, is arranged so as to encode the multimedia data carried by the signal coming from the input 53 into a multimedia stream 9.

The computing device 5 is separate and distant from the reader 1. The computing device 5 can take the form of a device known per se, for example a computing device such as a computer, a tablet or a multifunction telephone (“Smartphone”) , a game console, etc.

Once connected to each other, the reader 1 and the computing device 5 form the system 100.

In the example described here, the processing device 51 of the computing device 5 is also arranged so as to adapt the multimedia decoding as a function of at least one piece of data relating to the physical format of the data medium 3 and / or the format of multimedia coding of the data read by the reader 1. In particular, the type of multimedia decoding to be implemented by the processing device 51 can be selected so that the multimedia stream 9 obtained at output 55 of the computing device 5 is as faithful as possible original multimedia content before coding and storing it on the medium 3.

Thus, the multimedia decoding operation implemented by the processing device 51 and aimed at restoring the multimedia content can be seen as the reciprocal operation of the initial multimedia coding operation implemented to store the multimedia content on the support 3 from the original multimedia stream. The decoding implemented by the processing device 51 can be adapted, at least in part automated, as a function of the data relating to the original multimedia coding.

For example, data relating to the multimedia coding format of the data can comprise a precise identification of the type of multimedia coding implemented on the initial medium 3. Thus, the decoding operation implemented by the processing device 51 can be selected and then implemented so that the multimedia stream obtained is readable. In most cases, it becomes unnecessary to successively implement several decodings before obtaining an exploitable multimedia stream. By exploitable multimedia stream is understood a multimedia stream able to be reproduced and / or to be stored in a memory of the computing device 5. An additional non-limiting example will be a memory of a USB key or an SD card.

In another example, data relating to the multimedia coding format of the data may comprise a pre-selection of several types of multimedia coding from all of the known types of multimedia coding. In other words, partial information may not make it possible to identify with certainty the multimedia coding implemented on the medium 3. However, such partial information may allow a restricted list of multimedia codings likely to have been used to be established. originally. For example, information on the physical format of the medium 3 can make it possible to deduce the multimedia encodings most likely to have been implemented. To this end, a database associating with each physical format a list of possible multimedia encodings can be called by the processing device 51. Thus, the probability of obtaining a readable multimedia stream 9 at output is improved.

The processing device 51 of the computing device 5 is arranged to receive said at least one data item relating to the physical format of the data medium 3 and / or to the multimedia coding format of the data as stored on the medium 3, for example from the at least one of the following sources:

- a man-machine interface of said computer device 5;

- the output 13 of the reader 1 capable of transmitting said data (embodiment of the reader 1 described above);

a computer module of the computer device 5 arranged to identify a multimedia coding format or a list of multimedia coding formats as a function of the signal received at input 53.

In the examples described here, the computing device 5 also comprises an output 55, in the form of a physical connector of the video or audio-video output type, for example according to an HDMI standard. Thus, the multimedia stream 9 can be supplied to a third-party broadcasting device (television, screen, or speaker for example). The multimedia stream 9 can then be used to broadcast the corresponding multimedia content 10. In variants, the output 55 does not take the form of a physical connector. For example, when the computing device 5 is a multifunctional telephone itself equipped with a screen and / or a speaker, the multimedia content 10 can be broadcast directly by such peripherals. Similarly, the multimedia stream 9 can again be converted into a digital file and stored in a memory device, either a memory device integrated into the computing device 5, or a remote memory device (for example a third hard drive, online storage or " Cloud ”), a combination of the two.

In embodiments, the computing device 5 further comprises an analog-digital converter ("ADC") arranged so as to convert the decoded analog signal into a digital signal to be transmitted on output 55, in particular in cases where the reader 1 outputs an analog signal and not a digital signal.

In the embodiment shown in FIG. 2, the computer device 5 further comprises a control output 59. The control output 59 is arranged to transmit, to the reader 1, control signals 50 intended for the motor 17 (as described above). The control signals 50 are controlled by the processing device 51.

In other words, the motor 17 of the reader 1 is controlled by the processing device 51 of the computing device 5 via the control output 59 of the computing device 5 and the control input 19 of the reader 1. Thus, in operation of the system 100, the reader 1 behaves like a slave device of the computing device 5 (or a peripheral).

In the embodiments of the computer device 5 comprising a control output 59, at least one of the external physical connectors and / or wireless communication modules can act as input 53 and control output 59 for the device IT 5, either alternately or simultaneously.

Examples of embodiments of the reader 1 and of the computing device 5 have been described above. According to another aspect, the invention can also be seen as a method implemented by computer means, typically those of the computing device 5. For example, the following multimedia content conversion method can be implemented:

a) receive as input 53 from the computer device 5 and from a third-party reader 1 a signal carrying data of multimedia content;

optionally, if the received signal is an analog signal, converting said signal into a digital signal;

b) identify a multimedia encoding format or a list of multimedia encoding formats;

c) coding the multimedia data carried by the received signal into a multimedia stream 9 by selecting the multimedia coding format according to the previous identification.

Optionally, if the data read from the data medium are coded data, the multimedia content conversion method further comprises, between steps a) receiving and b) identifying, the following steps:

a2) identify a multimedia coding format or a list of multimedia coding formats by means of which the data read have been coded before being written to the data medium;

a3) decode the multimedia data carried by the received signal into an intermediate multimedia stream by selecting the multimedia coding format according to the previous identification.

Step c) codes the multimedia data of the intermediate multimedia stream into a multimedia stream 9.

Thus, in this embodiment, the data read from the data medium are coded in a first multimedia coding format. The computing device receives the data coded in this first multimedia coding format. The computing device includes a decoder capable of decoding the data read coded in this first multimedia coding format. The computing device also includes an encoder capable of encoding the decoded data in a second encoding format distinct from the first encoding format. The computing device then converts the read data coded from a first multimedia coding format into a second multimedia coding format.

It will further be understood that, in variants, step c) of multimedia coding may include additional operations for processing the multimedia stream. In such cases, such operations may aim to improve the quality of the multimedia stream, including towards a higher quality than that of the original stream. Such operations, in particular in the processing of audio-video content originating from analog means, are known as such. Examples include cleaning up the color smears typical of a video recorded analogically on a magnetic tape cassette, or improving the sharpness of sound on an analogically recorded soundtrack.

Such a method can also take the form of a computer program comprising instructions for implementing the method when this program is executed by a processing device. It can also take the form of a non-transient recording medium readable by a computer on which a program for the implementation of the method is recorded when this program is executed by a processing device.

So far, the system 100 combining the reader 1 and the computer device 5 has been described as capable of implementing a process during which data is extracted from a data carrier to the computer device 5. A technician could transpose this reverse. In other words, the invention could also take the form of a system by means of which the process is reversed. In such a case, the reader 1 notably includes a recorder 1 ’(or“ recorder ”) and an input 53’. Thus, data of multimedia content available to the computing device 5 (digital or already analog) can be converted, in terms of multimedia coding format, in particular simply decoded when the data written on the data medium is in a non-digital format. coded by the computing device 5 to a format compatible with writing on a data medium. Then, the converted data, in particular the decoded data, are transmitted to the input 53 ’of the recorder Γ. Logger 1 can then write data to a data carrier without the need for any "smart" part of Logger 1 to convert the data received.

The invention is not limited to the examples of readers, computer devices, systems and methods described above, only by way of example, but it encompasses all the variants that a person skilled in the art can envisage in the protection sought.

Claims (15)

claims 1. Player (1) for converting multimedia content comprising: a read head (11) arranged so as to read multimedia content data written on a data medium (3), and - an output (13) capable of transmitting a signal carrying the data (7) from the read head (11), in a format identical to that of the storage on the data medium (3), and intended for a third-party computing device (5). 2. Reader (1) according to claim 1, further comprising an analog-digital converter arranged to convert an analog signal from the read head (11) into a digital signal to be transmitted via the output (13). 3. Reader (1) according to one of the preceding claims, further comprising a receptacle (15) and a motor (17) jointly arranged so as to receive a data medium (3) and so that the activation motor (17) causes relative movement of said data carrier (3) and the read head (11), the reader (1) further comprising an input (19) adapted to receive control signals (50) from the motor (17) from a third-party control device (5). 4. Reader (1) according to one of the preceding claims, further comprising at least one optical and / or mechanical sensor capable of detecting the physical format of the data medium (3) and / or the multimedia coding format of the data of so as to identify said formats, the output (13) being further able to transmit data relating to the detected formats. 5. Reader (1) according to one of the preceding claims, further comprising: - an input (13 ’) capable of receiving a signal carrying data, in a format identical to that of storage on a data carrier (3), and coming from a third-party computer device (5), and - at least one writing head (1 T) arranged so as to write multimedia content data received on the data medium (3). 6. Device for converting separate multimedia content remote from a reader (1) arranged so as to read multimedia content data recorded on a data medium (3) comprising: an input (53) capable of receiving a signal emitted by the reader (1), and - at least one processing device (51) arranged so as to encode the data carried by the signal from the input (53) into a multimedia stream (9). 7. Device according to claim 6, in which the processing device (51) is further arranged so as to adapt the multimedia coding as a function of at least one piece of data relating to the physical format of the data medium (3) and / or the multimedia coding format of the data read by the reader (1). 8. Device according to claim 7, in which the processing device (51) is arranged to receive, from at least one of the following sources, said at least one data item relating to the physical format of the data medium (3) and / or in multimedia coding format of the data read by the reader (1): - a man-machine interface of said computer device (5) comprising and / or constituting the conversion device; - an output (13) of the reader (1) capable of transmitting data drawn from a sensor of the reader (1); - a detector of the conversion device or of the computer device (5) arranged to identify a multimedia coding format or a list of multimedia coding formats as a function of the signal received at input (53). 9. Device for converting multimedia content according to one of claims 6 to 8 comprising: - an output capable of transmitting a signal to a reader (1) comprising a writing head on a data medium (3), and - at least one processing device (51) arranged so as to encode the data carried by a multimedia stream (9) into a signal whose data are in a format identical to that of storage on the data medium (3). 10. Separate and remote computing device of a reader (1) arranged so as to read multimedia content data recorded on a data medium (3) comprising: an input (53) capable of receiving a signal emitted by the reader (1), and - at least one processing device (51) arranged so as to encode the data carried by the signal from the input (53) into a multimedia stream (9). 11. Method for converting multimedia content, implemented by a conversion device, comprising the following steps: a) receive as input (53) from the conversion device and from a third-party player (1) a signal carrying data read from multimedia content; b) identify a multimedia encoding format or a list of multimedia encoding formats; c) coding the data carried by the received signal in a multimedia stream (9) by selecting the multimedia coding format according to the previous identification. 12. Method for converting multimedia content according to the preceding claim, characterized in that the conversion method comprises, if the received signal is a digital signal, the following steps prior to the step vs) : - identify a multimedia encoding format or a list of multimedia encoding formats by means of which the multimedia content has been previously encoded; - decode the data carried by the received signal according to the previous identification, and provide the decoded signal in step c) to code the decoded data. 13. Method for converting multimedia content according to one of claims 11 or 12, characterized in that the conversion method comprises, after step a), the step: if the received signal is an analog signal, converting said signal into a digital signal. 14. Computer program comprising instructions for implementing the method according to claim 11 to 13 when this program is 5 executed by a processing device. 15. A non-transient recording medium readable by a computer on which a program for implementing the method according to claim 9 to 11 is recorded when this program is executed by a processing device.