June 2011 - ffmpeg-user - lists.ffmpeg.org

What video formats to support?
by Dotan Cohen 01 Jun '11

01 Jun '11

A user has a collection of video files from various sources. He need to know exactly which video formats he has in use so that he can buy a compatible media player such as this: http://cgi.ebay.com/H-264-RM-RMVB-MKV-FLV-HDD-TV-MEDIA-PLAYER-VGA-HDMI-720P… Can ffmpeg tell use which container formats and codecs are in use on a particular file? I went through the fine manpage but saw no mention of it. Googling finds me nothing relevant either. Thanks! -- Dotan Cohen http://gibberish.co.il http://what-is-what.com

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What happened to faad/channel element not allocated
by Jon Drukman 01 Jun '11

01 Jun '11

I have a .mov file which shows up with zero audio channels, and produces the famous "[aac @ 0xad45c60] channel element 1.0 is not allocated" message when ffmpeg tries to read it. I found this blog post: http://lzone.de/aac+decoding+with+ffmpeg+doesn%27t+work which suggests that using libfaad to decode the audio stream will give satisfactory results. However, it seems that the current version of ffmpeg does not support libfaad any more. There are no faad-related configure options, at least, in a fresh git checkout. What can I do to process these files successfully? $ ffprobe Title_02.mov ffprobe version UNKNOWN, Copyright (c) 2007-2011 the FFmpeg developers built on May 25 2011 22:23:12 with gcc 4.4.4 20100726 (Red Hat 4.4.4-13) configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libx264 --enable-pthreads --enable-static --disable-shared --disable-network --enable-nonfree libavutil 51. 2. 2 / 51. 2. 2 libavcodec 53. 6. 0 / 53. 6. 0 libavformat 53. 2. 0 / 53. 2. 0 libavdevice 53. 0. 0 / 53. 0. 0 libavfilter 2. 11. 0 / 2. 11. 0 libswscale 0. 14. 0 / 0. 14. 0 libpostproc 51. 2. 0 / 51. 2. 0 [aac @ 0x902ec60] channel element 1.0 is not allocated (message repeated 1000 times) [mov,mp4,m4a,3gp,3g2,mj2 @ 0x902a500] max_analyze_duration 5000000 reached at 5005000 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Title_02.mov': Metadata: creation_time : 2011-04-28 20:41:51 Duration: 00:02:49.31, start: 0.000000, bitrate: 1299 kb/s Stream #0.0(eng): Video: mpeg4, yuv420p, 320x240 [PAR 1:1 DAR 4:3], 1198 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 30k tbc Metadata: creation_time : 1945-04-27 20:41:51 Stream #0.1(eng): Audio: aac, 0 channels, s16, 96 kb/s Metadata: creation_time : 1945-04-27 20:41:51

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x264 with 4:2:2 colorspace
by betonpfeiler 01 Jun '11

01 Jun '11

Oh, thanks for the advice... I didn't know that this would hijack the thread. Sorry for that! So here comes my question in a new Thread: Hey! > > I'm trying to encode a file to an AVC-intra like codec. For testing I'm > using the following command: > > ffmpeg -i test.avi' -vcodec libx264 -pix_fmt yuv422p -vpre fast -b 100M > -intra 'avcintra.mp4' > > The problem is, I can't get ffmpeg to keep the 4:2:2 pix format, it > always falls back to 4:2:0 on the High-Level. How can I set ffmpeg to > the high4:2:2-Level? > > Thanks! > J

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Problem editing m4a files with ffmpeg
by richard 01 Jun '11

01 Jun '11

When I edit an m4a file using ffmpeg using command like this: ffmpeg -i filename.m4a -ss 00:02:34 -t 00:28:35 -acodec copy outputfile.m4a the edited file will play OK on software media players, but large m4a files won't play on my Marantz CD6003. The files timeout after 30 seconds. If I use mp4creator to optimize the edited m4a file using command like this: mp4creator -optimize filename.m4a the optimized file plays OK on the Marantz. I found out using AtomicParsley that editing an m4a file with ffmpeg moves the mdat atoms from the end of the file to near the front. This seems to be an issue for the Marantz. mp4creator moves the mdat atoms back to the end of the file again. Is this a bug in ffmpeg? You kindly fixed another issue with the Marantz here:- http://ffmpeg.org/pipermail/ffmpeg-user/2011-April/000374.html

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UDP converting
by Mārtiņš Bisenieks 01 Jun '11

01 Jun '11

Hi I'm trying to encode udp live stream and send to wowza meda server with ffmpeg. At the beginning ffmpeg works fine but after some errors it crashes and dont do anything. Mybe someone can help me with this. There is my console log: martins@topaz:~$ ffmpeg -i "udp://225.1.1.4:5000" -vcodec libx264 -vpre baseline -g 60 -vb 150000 -strict experimental -acodec aac -ab 96000 -ar 48000 -ac 2 -vbsf h264_mp4toannexb -f mpegts udp://127.0.0.1:10000?pkt_size=1316 ffmpeg version git-N-30421-gc328122, Copyright (c) 2000-2011 the FFmpeg developers built on May 30 2011 13:45:56 with gcc 4.4.3 configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab libavutil 51. 3. 0 / 51. 3. 0 libavcodec 53. 6. 1 / 53. 6. 1 libavformat 53. 2. 0 / 53. 2. 0 libavdevice 53. 1. 0 / 53. 1. 0 libavfilter 2. 11. 0 / 2. 11. 0 libswscale 0. 14. 0 / 0. 14. 0 libpostproc 51. 2. 0 / 51. 2. 0 [mpegts @ 0x26b23e0] Unable to seek back to the start [mpeg2video @ 0x26b3560] mpeg_decode_postinit() failure Last message repeated 7 times [mpegts @ 0x26b23e0] max_analyze_duration 5000000 reached at 5016000 [mpegts @ 0x26b23e0] Estimating duration from bitrate, this may be inaccurate Input #0, mpegts, from 'udp://225.1.1.4:5000': Duration: N/A, start: 90805.007222, bitrate: 4192 kb/s Program 113 Stream #0.0[0x65]: Video: mpeg2video (Main), yuv420p, 720x576 [PAR 16:15 DAR 4:3], 4000 kb/s, 26.27 fps, 25 tbr, 90k tbn, 50 tbc Stream #0.1[0x66](eng): Audio: mp2, 48000 Hz, stereo, s16, 192 kb/s [buffer @ 0x274c5e0] w:720 h:576 pixfmt:yuv420p tb:1/1000000 sar:16/15 sws_param: [libx264 @ 0x26cabe0] Default settings detected, using medium profile [libx264 @ 0x26cabe0] using SAR=16/15 [libx264 @ 0x26cabe0] using cpu capabilities: MMX2 SSE2 SSE3 Cache64 [libx264 @ 0x26cabe0] profile High, level 3.0 [mpegts @ 0x26ab040] muxrate VBR, pcr every 2 pkts, sdt every 200, pat/pmt every 40 pkts Output #0, mpegts, to 'udp://127.0.0.1:10000?pkt_size=1316': Metadata: encoder : Lavf53.2.0 Stream #0.0: Video: libx264, yuv420p, 720x576 [PAR 16:15 DAR 4:3], q=2-31, 150 kb/s, 90k tbn, 25 tbc Stream #0.1(eng): Audio: libfaac, 48000 Hz, stereo, s16, 96 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop, [?] for help [mpeg2video @ 0x26b3560] warning: first frame is no keyframe [udp @ 0x26b2960] circular_buffer: OVERRUN time=9.08 bitrate= 316.0kbits/s dup=9 drop=0 frame= 520 fps= 18 q=50.0 size= 693kB time=19.08 bitrate= 297.7kbits/s dup=9 drop=0 -- Coast Core *Mārtiņš Bisenieks* Lead programmer Phone: +371 26129622 E-mail: martins.bisenieks(a)coastcore.com Web: http://www.coastcore.com

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ffmpeg and hardware encoder
by Vadim Mushayev 01 Jun '11

01 Jun '11

Hi I want to work with ffmpeg//ffserver in order to send video stream from my device. CPU of the device has hardware encoder. 1. How can I pass encoding result to the ffmpeg? 2. Can I send encoding result to the ffserver? Thanks

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Re: [FFmpeg-user] I try to compile VLC, I had a error message about ffmpeg.
by Dmitrij Velkin 01 Jun '11

01 Jun '11

Hi Tim, Did you solve this Problem? I Have the same problem with compiling ffmpeg! Thanks!

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Building for ARM
by Wernam Wer 01 Jun '11

01 Jun '11

Hi all, I'm building ffmpeg for an ARM with Linux headers 2.6 to send video frames over RTP, ffmpeg only have to packet these frames and send it. I need to optimize the space so I use the minimal configuration. I have compile the revision 26400 with this configuration and works fine: ./configure --enable-cross-compile --cross-prefix=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu- --target-os=linux --cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --host-cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --cpu=armv5te --arch=arm --enable-static --disable-asm --enable-armv5te --disable-stripping --disable-debug --disable-encoders --disable-decoders --disable-parsers --disable-ffplay --disable-ffserver --disable-devices --disable-bsfs --disable-muxers --enable-parser=mpeg4video --enable-muxer=rtp --enable-parser=aac --disable-filters --disable-demuxers --enable-demuxer=m4v --extra-libs=-static --extra-cflags=--static --disable-ffprobe I use with this command (with this output): # ffmpeg -vcodec copy -i pipe -an -f rtp rtp://224.52.52.22:7004 -sameq -v 0 < /dev/null & [3] 178 # FFmpeg version SVN-r26400, Copyright (c) 2000-2011 the FFmpeg developers built on Jan 18 2011 09:48:17 with gcc 4.1.2 configuration: --enable-cross-compile --cross-prefix=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu- --target-os=linux --cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --host-cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --cpu=armv5te --arch=arm --enable-static --disable-asm --enable-armv5te --disable-stripping --disable-debug --disable-encoders --disable-decoders --disable-parsers --disable-ffplay --disable-ffserver --disable-devices --disable-bsfs --disable-muxers --enable-parser=mpeg4video --enable-muxer=rtp --enable-parser=aac --disable-filters --disable-demuxers --enable-demuxer=m4v --extra-libs=-static --extra-cflags=--static libavutil 50.36. 0 / 50.36. 0 libavcore 0.16. 1 / 0.16. 1 libavcodec 52.108. 0 / 52.108. 0 libavformat 52.93. 0 / 52.93. 0 libavdevice 52. 2. 3 / 52. 2. 3 libavfilter 1.74. 0 / 1.74. 0 libswscale 0.12. 0 / 0.12. 0 puntero a frame (fis): 0xc2780004 [m4v @ 0x3538a0] max_analyze_duration reached [m4v @ 0x3538a0] Estimating duration from bitrate, this may be inaccurate Input #0, m4v, from 'pipe': Duration: N/A, bitrate: N/A Stream #0.0: Video: [0][0][0][0] / 0x0000, 352x288 [PAR 1:1 DAR 11:9], 25 fps, 25 tbr, 1200k tbn, 25 tbc Output #0, rtp, to 'rtp://224.52.52.22:7004': Metadata: encoder : Lavf52.93.0 Stream #0.0: Video: [0][0][0][0] / 0x0000, 352x288 [PAR 1:1 DAR 11:9], q=2-31, 90k tbn, 25 tbc Stream mapping: Stream #0.0 -> #0.0 SDP: v=0 o=- 0 0 IN IP4 127.0.0.1 s=No Name c=IN IP4 224.52.52.22 t=0 0 a=tool:libavformat 52.93.0 m=video 7004 RTP/AVP 96 a=rtpmap:96 MP4V-ES/90000 a=fmtp:96 profile-level-id=1; config=000001B003000001B50900000100000001200086C400668582120A31 Press [q] to stop encoding If I try to use the version 0.6.3, I can compile it fine, but it doesn't work, i get this output: # ./ffmpeg.last -vcodec copy -i pipe -an -f rtp rtp://224.52.52.22:7004 -sameq -re FFmpeg version 0.6.3, Copyright (c) 2000-2010 the FFmpeg developers built on May 12 2011 13:00:49 with gcc 4.1.2 configuration: --enable-cross-compile --cross-prefix=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu- --target-os=linux --cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --host-cc=../../Cross/arm-softfloat-linux-gnu/bin/arm-softfloat-linux-gnu-gcc --cpu=armv5te --arch=arm --enable-static --disable-asm --enable-armv5te --disable-stripping --disable-debug --disable-encoders --disable-decoders --disable-parsers --disable-ffplay --disable-ffserver --disable-devices --disable-bsfs --disable-muxers --enable-parser=mpeg4video --enable-muxer=rtp --enable-parser=aac --disable-filters --disable-demuxers --enable-demuxer=m4v --extra-libs=-static --extra-cflags=--static --disable-ffprobe libavutil 50.15. 1 / 50.15. 1 libavcodec 52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0.11. 0 / 0.11. 0 [m4v @ 0x30e360]max_analyze_duration reached [m4v @ 0x30e360]Estimating duration from bitrate, this may be inaccurate Input #0, m4v, from 'pipe': Duration: N/A, bitrate: N/A Stream #0.0: Video: 0x0000, 352x288 [PAR 1:1 DAR 11:9], 25 fps, 25 tbr, 1200k tbn, 25 tbc And doesn't sent anything. My question is I how can I debug it or if I'm doing anything wrong. I also try to use the last version or the 0.7.rc1 but both doesn't compile, I get this error: /home/john/ffmpeg/ffmpeg-0.7-rc1/libavformat/libavformat.a(utils.o): In function `.L2670': utils.c:(.text+0x928c): undefined reference to `ff_find_pix_fmt' collect2: ld returned 1 exit status make: *** [ffmpeg_g] Error 1 Thanks for the answers. Wernam

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MXF wrapping with fixed length BER (4Byte)
by higgins0 01 Jun '11

01 Jun '11

is there a way to force FFMBC command lines versions to work that way : encode KLV length in fixed 4 bytes, instead of a variable length? -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/MXF-wrapping-with-fixed-length-BER… Sent from the FFmpeg-users mailing list archive at Nabble.com.

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Complete beginner - no sound with screencasting using x11grab?
by lugoteehalt 01 Jun '11

01 Jun '11

Trying to use ffmpeg to record the screen. The following command does not work, but remove '-i pulse' and it works perfectly, but without sound. ffmpeg -f x11grab -i pulse -s `xdpyinfo | grep 'dimensions:'| awk '{print $2}'` -r 25 -i :0.0 -sameq out.mpg ffmpeg version git-N-30155-g01a73d6, Copyright (c) 2000-2011 the FFmpeg developers built on May 23 2011 22:32:40 with gcc 4.4.5 configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab libavutil 51. 2. 1 / 51. 2. 1 libavcodec 53. 6. 0 / 53. 6. 0 libavformat 53. 2. 0 / 53. 2. 0 libavdevice 53. 0. 0 / 53. 0. 0 libavfilter 2. 10. 0 / 2. 10. 0 libswscale 0. 14. 0 / 0. 14. 0 libpostproc 51. 2. 0 / 51. 2. 0 [x11grab @ 0x9456b40] device: pulse -> display: pulse x: 0 y: 0 width: 0 height: 0 [x11grab @ 0x9456b40] Could not open X display. pulse: Input/output error Current stable version of Debian. Have installed the package 'pulseaudio'. Put in this in /etc/asound.conf: pcm.pulse { type pulse } ctl.pulse { type pulse } pcm.!default { type pulse } ctl.!default { type pulse } As suggested in this forum. Any help appreciated. -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/Complete-beginner-no-sound-with-sc… Sent from the FFmpeg-users mailing list archive at Nabble.com.

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