FLV (ffmpeg) muxing not working

I reverted all the (fourcc) commits in the meantime, those weren't related. According to IRC users using linux it broke on another date (20070831) so it might be FFmpeg version related.

changed title from FLV muxing not working to FLV (ffmpeg) muxing not working

changed milestone to %0.9.0-test1

I have a working copy of vlc 0.9 transcoding from mp4v to FLV1. The revision is 23947. I use ffmpeg from the debian multimedia repo on a debian Etch system.

{prefix}/lib --shlibdir=

{prefix}/lib --incdir=

{prefix}/include/ffmpeg --enable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --mandir=

{prefix}/share/man --enable-libvorbis --enable-pthreads --enable-libfaac --enable-xvid --enable-libdts --enable-amr_nb --enable-amr_wb --enable-pp --enable-libogg --enable-libgsm --enable-x264 --enable-liba52 --enable-libtheora --extra-cflags=-Wall -g -fPIC -DPIC --cc=ccache cc --enable-swscaler libavutil version: 49.4.0 libavcodec version: 51.40.2 libavformat version: 51.11.0 built on Mar 29 2007 09:07:44, gcc: 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)

vlc --version

VLC media player 0.9.0-svn Grishenko [00000001] main libvlc debug: VLC media player - version 0.9.0-svn Grishenko - (c) 1996-2007 the VideoLAN team [00000001] main libvlc debug: libvlc was configured with ./configure '--mandir=/share/man' '--host=i486-linux-gnu' '--build=i486-linux-gnu' '--enable-maintaner-mode' '--enable-release' '--prefix=/usr' '--enable-libtool' '--enable-fast-install' '--disable-update-check' '--disable-gnome' '--disable-gtk' '--disable-familiar' '--disable-fb' '--enable-ggi' '--enable-sdl' '--enable-esd' '--enable-mad' '--enable-arts' '--enable-jack' '--enable-lirc' '--enable-a52' '--enable-aa' '--enable-dvbpsi' '--enable-mozilla' '--disable-kde' '--enable-mp4' '--enable-dvb' '--disable-satellite' '--enable-ogg' '--enable-vorbis' '--enable-shout' '--enable-wxwidgets' '--with-wx-config=wx-config' '--disable-qt4' '--disable-slp' '--enable-flac' '--disable-skins' '--disable-basic-skins' '--enable-skins2' '--enable-freetype' '--enable-mkv' '--enable-speex' '--enable-caca' '--enable-live555' '--enable-libmpeg2' '--enable-fribidi' '--enable-cdio' '--enable-mod' '--enable-theora' '--enable-modplug' '--enable-dvdnav' '--enable-gnutls' '--enable-ffmpeg' '--enable-ncurses' '--enable-smb' '--disable-gnomevfs' '--enable-bonjour' '--enable-mpc' '--enable-vcd' '--enable-vcdx' '--enable-notify' '--enable-debug' '--enable-twolame' '--enable-faad' '--disable-zvbi' '--enable-telx' '--enable-mediacontrol-bindings' '--disable-x264' '--enable-alsa' '--enable-dv' '--enable-v4l' '--enable-v4l2' '--enable-pvr' '--enable-svgalib' '--enable-dvd' '--without-dvdcss' 'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' [00000001] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface. [00000001] main libvlc debug: translation test: code is "C" VLC version 0.9.0-svn Grishenko Compiled by root@************************* Compiler: gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) Based upon svn changeset [23947M] This program comes with NO WARRANTY, to the extent permitted by law. You may redistribute it under the terms of the GNU General Public License; see the file named COPYING for details. Written by the VideoLAN team; see the AUTHORS file.

On the server that trascodes from a cctv card to mp4v I use the command: vlc -vvv v4l:/dev/video0:norm=ntsc:size=320x240:channel=0 --sout '#transcode{display=noaudio,vcodec=mp4v,vb=200,vt=800000,keyint=80,}:std{access=http,mux=asf,dst=:9024}'

And on the server that transcodes from mp4v to FLV I use the command: vlc -vvv http://**************:9024 --sout='#transcode{scale=1,vcodec=FLV1,vb=400}:std{access=http,dst=:8080/test.flv}'

I hope this helps with the debugging.

added Difficulty::hard Severity::critical labels

The svn version of vlc works with flv streaming. You just have to use a revision of ffmpeg before 10285. In ffmpeg revision 10285 flv streaming broke.

For future reference this is what Trax said about the issue: Trax``> we need to fill AV_NOPTS_VALUE

And here is a link to the change in revision 10285: http://svn.mplayerhq.hu/ffmpeg?view=rev&revision=10285

The ffmpeg file that broke during revision 10285, here are the changes since 10285 till now. This could help fix the way VLC uses ffmpeg for flv transcoding.

http://svn.mplayerhq.hu/ffmpeg/trunk/libavformat/utils.c?r1=11573&r2=10285&pathrev=11573

I have compiled vlc with ffmpeg revision 10285 and removed lines: 618 : benoit 10285 if (st->start_time == AV_NOPTS_VALUE) 619 : st->start_time = pts;

And it works. I am able to transcode and stream if I remove the above lines.

I managed to get flv-streaming working with following patch on recent ffmpeg: So basicly revert that cut_dts = AV_NOPTS_VALUE, and set it pkt.dts - 1 Index: modules/codec/ffmpeg/mux.c

--- modules/codec/ffmpeg/mux.c (revision 24431) +++ modules/codec/ffmpeg/mux.c (working copy) @@ -362,8 +362,11 @@ pkt.dts = p_data->i_dts * p_stream->time_base.den / I64C(1000000) / p_stream->time_base.num;

/* this is another hack to prevent libavformat from triggering the "non monotone timestamps" check in avformat/utils.c */

/* this is another hack to prevent libavformat from triggering the "non monotone timestamps" check in avformat/utils.c p_stream->cur_dts = AV_NOPTS_VALUE; +*/
p_stream->cur_dts = (p_data->i_dts * p_stream->time_base.den /

                   I64C(1000000) / p_stream->time_base.num) - 1;

if( av_write_frame( p_sys->oc, &pkt ) < 0 ) {

assigned to @ileoo

changed milestone to %0.9.0-TP

fixed in [25351]

added Status::fixed label

closed

FLV (ffmpeg) muxing not working

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vlc --version

I managed to get flv-streaming working with following patch on recent ffmpeg: So basicly revert that cut_dts = AV_NOPTS_VALUE, and set it pkt.dts - 1 Index: modules/codec/ffmpeg/mux.c