[vlc-devel] VLC > 0.9.9 playing mp4(h264)/HTTP
R.Mattson at latrobe.edu.au
Thu May 13 09:25:54 CEST 2010
Thank you for taking the time to reply. We were resisting investigating reencoding our library because of its size, it is big and would take some time. Your suggestion to use the -demux flag with avformat value seems to work, and work well. I guess my next question is, why?
How might I remix/mux the files to overcome this fault within the mp4 container as I'm not really sure what the error is?
And also how might I pass that command line parameter to the firefox plugin?
At a guess, I'd say we'd have to have an attribute saved in , as per . -> demux=avformat
 - C:\Documents and Settings\%username%\Application Data\vlc\vlcrc
 - http://www.videolan.org/support/faq.html
From: vlc-devel-bounces at videolan.org [mailto:vlc-devel-bounces at videolan.org] On Behalf Of Kaarlo Räihä
Sent: Thursday, 13 May 2010 4:12 PM
To: Mailing list for VLC media player developers
Subject: Re: [vlc-devel] VLC > 0.9.9 playing mp4(h264)/HTTP
Have you tried to remux the MP4 file? Or have you tried to use vlc --demux=avformat http://www.ltuic.latrobe.edu.au/rob_vid1.mp4
2010/5/13 Robert Mattson <R.Mattson at latrobe.edu.au<mailto:R.Mattson at latrobe.edu.au>>
Dear VLC Developers,
We're using the Mozilla firefox plug-in to provide an interface to a custom database of language learning material. We are having trouble playing mp4 media files accessed via HTTP using any VLC older than 0.9.9 (in both QT GUI and Mozilla plug-in). I posted this information to the VLC forums, and it was suggested that I try here.
When downloaded and played locally, the media files play correctly. Specifically, when playing the video files we have over HTTP, the player simply stops about 30 seconds in with the following info shown in a level-2 message box.
main debug: connection succeeded (socket = 1580)
access_http debug: protocol 'HTTP' answer code 206
access_http debug: Server: Apache
access_http debug: this frame size=55576460
access_http debug: stream size=60795898,pos=5219438,remaining=55576460
access_http debug: Content-Type: video/mp4
mp4 warning: track[0x2] will be disabled (eof?)
main warning: received buffer in the future
main debug: thread times: real 0m39.015625s, kernel 0m0.031250s, user 0m0.015625s
main debug: removing module "faad"
main debug: killing decoder fourcc `mp4a', 45 PES in FIFO
main debug: removing module "scaletempo"
main debug: removing module "bandlimited_resampler"
aout_directx debug: closing audio device
aout_directx debug: DirectSoundThread exiting
main debug: thread ended
main debug: thread times: real 0m38.718750s, kernel 0m0.187500s, user 0m0.015625s
main debug: removing module "aout_directx"
main debug: removing module "audio_format"
main debug: removing module "float32_mixer"
main debug: releasing aout
mp4 warning: track[0x1] will be disabled (eof?)
main warning: can't get output picture
avcodec warning: disabling direct rendering
avcodec warning: cannot decode one frame (7991 bytes)
main debug: thread times: real 0m39.171875s, kernel 0m0.015625s, user 0m1.656250s
avcodec debug: ffmpeg codec (H264 - MPEG-4 AVC (part 10)) stopped
main debug: removing module "avcodec"
main debug: killing decoder fourcc `h264', 19 PES in FIFO
main debug: saving a free vout
qt4 debug: Qt: Entering Fullscreen
main debug: EOF reached
mp4 debug: freeing all memory
main debug: removing module "mp4"
main debug: removing module "stream_filter_record"
main debug: removing module "access_http"
main debug: waitpipe: object killed
main debug: Program doesn't contain anymore ES
main debug: thread ended
main debug: dead input
main debug: thread times: real 0m39.265625s, kernel 0m0.515625s, user 0m0.203125s
main debug: changing item without a request (current 0/1)
main debug: nothing to play
main debug: destroying useless vout
qt4 debug: IM: Deleting the input
main debug: Destroying the input for 'http://188.8.131.52/rob_vid1.mp4'
main debug: TIMER input launching for 'http://184.108.40.206/rob_vid1.mp4' : 41.000 ms - Total 41.000 ms / 1 intvls (Avg 41.000 ms)
directx debug: DirectXEventThread terminating
directx debug: DirectXCloseWindow
directx debug: WinProc WM_DESTROY
qt4 debug: releasing video...
qt4 debug: Video is not needed anymore
main debug: removing module "qt4"
main debug: removing module "directx"
main debug: removing module "blend"
main debug: removing module "freetype"
main debug: removing module "yuvp"
main debug: removing module "swscale"
The test mp4 file we've used is available at http://www.ltuic.latrobe.edu.au/rob_vid1.mp4
The versions we've tested are: 1.0.0-win32, 1.0.3-win32, 1.0.5-win32, vlc-1.1.0-pre3-20100502-1255-win32, 1.2.0-git-20100508-0002-win32. The playback failure issue occurs in each and every version listed.
I've also tried swapping the libavcodec_plugin.dll file included with the 0.9.9 distro into the 1.0.5 plugins hive in program files, however the dll is not recognised/" No suitable decoder module: VLC does not support the audio or video format "avc1"".
Our client is windows XP sp3 and our server is a very vanilla gentoo/apache-2.2.15 on linux 2.6.29.
I performed many packet inspections with wireshark, and the byte-range requests seem to come and go correctly (I'd like to think I'm pretty familiar with rfc2616). Besides a few odd RST's sent from VLC's end prematurely, I've successfully played some MKV files using the same method and HTTP traffic still looks good.
Does anyone have any input that would help me, I've surfed through a great deal of Trac/vlc and not found anything that quite describes this problem. I'm hoping I can write a good bug up, but feel I need more information than I currently have.
Does anyone have any feedback that might help?
(p.s. there may be delays in responses as I am located in Australia.)
 - http://forum.videolan.org/viewtopic.php?f=2&t=76123&sid=00fbc4bf7d58f08fc8f3952bddcd5fcc
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