how to get h.263 video files

Microsoft Windows specific usage questions
Forum rules
Please post only Windows specific questions in this forum category. If you don't know where to post, please read the different forums' rules. Thanks.
paul_ca
Blank Cone
Blank Cone
Posts: 23
Joined: 11 Feb 2005 00:14

how to get h.263 video files

Postby paul_ca » 06 Jul 2006 21:03

I need some h.263 video files, and I know VLC can do some transcoding.
After I input some mpeg-2 file and then transcode into a local file ( I used
the Raw encapuslation method and h.263 as video transcoding option), but I failed to get the h.263 video elementary file.

Does anyone know how to get h.263 video file by VLC or where I can get some h.263 video test file. Thanks in advance.

DJ
Cone Master
Cone Master
Posts: 8206
Joined: 01 Jan 2006 04:30
Location: Koloa, Hawaii USA

Postby DJ » 06 Jul 2006 21:22

Raw is no container. You will need to select an encapsulation method. Given H263 was mostly used for teleconferencing MPEG-TS should work.

Name the resulting file anything.ts

As far as samples go you can search the web for H.263 samples.

paul_ca
Blank Cone
Blank Cone
Posts: 23
Joined: 11 Feb 2005 00:14

Postby paul_ca » 07 Jul 2006 16:16

Thank you for quick reply.

I have tried to input a mpeg-2 transport stream file (including mpeg-2 video and audio) and transcode this file by using MPEG-TS as encapsulation and H.263 as video option. However, I just got a mpeg-2 transport file which include only audio. So I am wondering whether VLC
can transcode other format video into H.263 video.
By the way, Is there any specification about how to put H.263 video into
mpeg-2 transport stream?
Thank you for your idea.
Raw is no container. You will need to select an encapsulation method. Given H263 was mostly used for teleconferencing MPEG-TS should work.

Name the resulting file anything.ts

As far as samples go you can search the web for H.263 samples.

DJ
Cone Master
Cone Master
Posts: 8206
Joined: 01 Jan 2006 04:30
Location: Koloa, Hawaii USA

Postby DJ » 07 Jul 2006 20:38

This is one of the few encoders I have never tried. But in trying this today I consistently get:

ffmpeg error: cannot open encoder
stream_out_transcode error: cannot find encoder
main debug: removing module "libmpeg2"
stream_out_transcode error: cannot create video chain
main error: cannot create packetizer output (mpgv)

Tried with several source formats and several container types. I always get audio. I also tried VLC 0.8.4 with the same end result.

The best thing I can suggest is to fill out a trouble report and refer to this post so the devs can see what has been suggested and what has been tried. :cry:

http://www.videolan.org/support/bug-reporting.html
Bug reporting

paul_ca
Blank Cone
Blank Cone
Posts: 23
Joined: 11 Feb 2005 00:14

Postby paul_ca » 07 Jul 2006 21:58

Thanks a lot, DJ.

From my previous try, I am not sure this is a problem of VLC or I did the transcoding in a right way by using VLC. In another word, as you suggested, I used MPEG-TS as encapulation, however, I am not sure whether we can do this or not, if possible, can you give me idea about the specification of putting h.263 video in MPEG-2 TS container?

Looking forward to hearing your reply. Thank you very much.
This is one of the few encoders I have never tried. But in trying this today I consistently get:

ffmpeg error: cannot open encoder
stream_out_transcode error: cannot find encoder
main debug: removing module "libmpeg2"
stream_out_transcode error: cannot create video chain
main error: cannot create packetizer output (mpgv)

Tried with several source formats and several container types. I always get audio. I also tried VLC 0.8.4 with the same end result.

The best thing I can suggest is to fill out a trouble report and refer to this post so the devs can see what has been suggested and what has been tried. :cry:

http://www.videolan.org/support/bug-reporting.html
Bug reporting

DJ
Cone Master
Cone Master
Posts: 8206
Joined: 01 Jan 2006 04:30
Location: Koloa, Hawaii USA

Postby DJ » 08 Jul 2006 12:51

By definition this was the best I could find:

H.263 is a video codec designed by the ITU-T as a low-bitrate encoding solution for videoconferencing. It was first designed to be utilized in H.324 based systems (PSTN and other circuit-switched network videoconferencing and videotelephony), but has since found use in H.323 (RTP/IP-based videoconferencing), H.320 (ISDN-based videoconferencing), RTSP (streaming media) and SIP (Internet conferencing) solutions as well.

H.263 was developed as an evolutionary improvement based on experience from H.261, the previous ITU-T standard for video compression, and the MPEG-1 and MPEG-2 standards. Its first version was completed in 1995 and provided a suitable replacement for H.261 at all bitrates. It was further enhanced in projects known as H.263v2 (a.k.a. H.263+ or H.263 1998) and H.263v3 (a.k.a. H.263++ or H.263 2000).

The next enhanced codec developed by the ITU-T (in partnership with MPEG) after H.263 is the H.264 standard, also known as AVC and MPEG-4 part 10. As H.264 provides a significant improvement in capability beyond H.263, the H.263 standard is now considered primarily a legacy design (although this is a recent development). Most new videoconferencing products now include H.264 as well as H.263 and H.261 capabilities

I have a feeling that H.263 may have been dropped in favor of H.264

In all the tests I ran the error was "could not find encoder" VLC is a major proponent of H.264 and it works well with the MP4 container.

I believe this was supported by ffmpeg a module VLC uses for a variety of formats including DivX, XviD, WMv 1-2 etc.

Another clue is that Preferences shows all of the compiled modules and I can't find a reference to H.263 only H.264

I doing a search of VLC websites I find that playback is supported for h.263 in all operating systems but can find nothing about the encoder.

So unfortunately is is going to take a developer to answer these questions.

:cry:

paul_ca
Blank Cone
Blank Cone
Posts: 23
Joined: 11 Feb 2005 00:14

Postby paul_ca » 10 Jul 2006 16:51

Thank you so much for your research. I will report this problem to the developers !
By definition this was the best I could find:

H.263 is a video codec designed by the ITU-T as a low-bitrate encoding solution for videoconferencing. It was first designed to be utilized in H.324 based systems (PSTN and other circuit-switched network videoconferencing and videotelephony), but has since found use in H.323 (RTP/IP-based videoconferencing), H.320 (ISDN-based videoconferencing), RTSP (streaming media) and SIP (Internet conferencing) solutions as well.

H.263 was developed as an evolutionary improvement based on experience from H.261, the previous ITU-T standard for video compression, and the MPEG-1 and MPEG-2 standards. Its first version was completed in 1995 and provided a suitable replacement for H.261 at all bitrates. It was further enhanced in projects known as H.263v2 (a.k.a. H.263+ or H.263 1998) and H.263v3 (a.k.a. H.263++ or H.263 2000).

The next enhanced codec developed by the ITU-T (in partnership with MPEG) after H.263 is the H.264 standard, also known as AVC and MPEG-4 part 10. As H.264 provides a significant improvement in capability beyond H.263, the H.263 standard is now considered primarily a legacy design (although this is a recent development). Most new videoconferencing products now include H.264 as well as H.263 and H.261 capabilities

I have a feeling that H.263 may have been dropped in favor of H.264

In all the tests I ran the error was "could not find encoder" VLC is a major proponent of H.264 and it works well with the MP4 container.

I believe this was supported by ffmpeg a module VLC uses for a variety of formats including DivX, XviD, WMv 1-2 etc.

Another clue is that Preferences shows all of the compiled modules and I can't find a reference to H.263 only H.264

I doing a search of VLC websites I find that playback is supported for h.263 in all operating systems but can find nothing about the encoder.

So unfortunately is is going to take a developer to answer these questions.

:cry:


Return to “VLC media player for Windows Troubleshooting”

Who is online

Users browsing this forum: No registered users and 40 guests