May 2011 - ffmpeg-user - lists.ffmpeg.org

Fwd: Bug Tracker - browser issue
by Peter Bašista 27 May '11

27 May '11

I was trying to file a feature request to the FFmpeg Bug Tracker. But I was not able to create a new ticket. The problem is that I can not see certain parts of the bug tracker's website with the Chromium browser. Using Firefox, everything shows fine and I am able to see the Login text. Here are the screenshots: https://picasaweb.google.com/pbasista/FFmpegBugTrackerBrowserIssue These display issues with Chromium, unfortunately, produce no visible warnings and that's why I was completely unaware that I see the website incorrectly. Maybe it would not be a bad idea to sort this issue out or at least to show a warning message about it. Peter Basista

2 2

dynamically sync video and audio - is it possible?
by Feurstein, Michael 27 May '11

27 May '11

Hi, My testruns show that when muxing an incoming udp stream with another audio stream the video stream always seems to be delayed plus minus 2 seconds. Is there a way to dynamically sync audio and video, or maybe tell ffmpeg to start muxing when both video and audio are available. I reckon the dynamic delay comes from opening the streams, therefore I can't assume a 2 second delay for each run, because sometimes the delay will be 3 seconds. My goal would be to automate this. I already tried itsoffset, which only helps if I know the delay beforehand, which I don't. I've been playing around with vsync and async as well as isync, but without success. The manual tells me I can sync one part (video or audio) to another, only thing is I can't find a working command setup Does someone out there have knowledge in how to use vsync and map the audio to the video? Maybe an example? If not... is it even possible what I want to achieve? I appreciate any input. Thanks and greetings! Michael Feurstein

1 1

420p out from ffmpeg becomes 420i in to x264
by sean darcy 26 May '11

26 May '11

I'm trying to use ffmpeg to pipe a stream to x264. Both ffmpeg and x264 from git today. I'm deinterlacing the input with yadif, piped output is yuv4mpeg. And ffmpeg thinks is generating yuv420p. But x264 is seeing the piped stream as interlaced. I thought yuv4mpeg had a header describing the stream. Is that so? If so, is the problem here that ffmpeg is not writing the header correctly, x264 is not reading it correctly, or have I screwed up something? sean + ffmpeg -i JulyPlay1990.avi -an -vf yadif=1:0,hqdn3d -r 60000/1001 -pix_fmt yuv420p -f yuv4mpegpipe - + x264 --demuxer y4m --preset slower --tune film --bitrate 1200 -o out3.m4v - ffmpeg version git-N-29946-g27614b1, Copyright (c) 2000-2011 the FFmpeg developers ...... Input #0, avi, from 'JulyPlay1990-interlaced.avi': Metadata: encoder : Lavf53.0.3 Duration: 00:21:40.66, start: 0.000000, bitrate: 30312 kb/s Stream #0.0: Video: dvvideo, yuv411p, 720x480 [PAR 8:9 DAR 4:3], 29.97 tbr, 29.97 tbn, 29.97 tbc Stream #0.1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s [buffer @ 0xe12400] w:720 h:480 pixfmt:yuv411p [yadif @ 0xe12ec0] mode:1 parity:0 [hqdn3d @ 0xe0db40] ls:4.000000 cs:3.000000 lt:6.000000 ct:4.500000 [hqdn3d @ 0xe0db40] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed filter 0 yadif' and the filter 'Parsed filter 1 hqdn3d' [scale @ 0xe0e380] w:720 h:480 fmt:yuv411p -> w:720 h:480 fmt:yuv420p flags:0xa0000004 Output #0, yuv4mpegpipe, to 'pipe:': Metadata: encoder : Lavf53.0.3 Stream #0.0: Video: rawvideo, yuv420p, 720x480 [PAR 8:9 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 59.94 tbc Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding y4m [info]: 720x480i 8:9 @ 60000/1001 fps (cfr) x264 [warning]: input appears to be interlaced, enabling bff interlaced mode. If you want otherwise, use --no-interlaced or --tff

3 3

Re: [FFmpeg-user] configure error with libavcodec/x86/dct32_sse
by Dave Rice 26 May '11

26 May '11

Thanks. Carl Eugen Hoyos helped me out last night. Running 'make distclean' fixed it. Dave On May 26, 2011, at 11:14 AM, Programmingkid wrote: > > On May 25, 2011, at 9:11 PM, Dave Rice wrote: > >> On two different machines (both Macs) on the git-master I'm getting this error during configure. >> >> CC libavcodec/x86/cavsdsp_mmx.o >> make: *** No rule to make target `libavcodec/x86/dct32_sse.c', needed by `libavcodec/x86/dct32_sse.o'. Stop. >> >> Any workaround? >> >> Dave Rice >> avpreserve.com >> _______________________________________________ >> ffmpeg-user mailing list >> ffmpeg-user(a)ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > What are your configuration options you used? What version of Mac OS X are you using? This page might help: http://jungels.net/articles/ffmpeg-howto.html

1 0

Need some help for saving bmp
by 铁慕容 26 May '11

26 May '11

Hi Guys DO you know how to save a decoded file to bmp format? I used the following command to decode a VC3 file and save the result, but failed. The interesting thing is when I decode a dv file, it works. ./ffmpeg -i Frame1.VC3 -vcodec dnxhd -r 25 -b 200k -sameq -y -f image2 output%03.bmp The error message was given: [dnxhd @ 0x1447f20]video parameters incompatible with DNxHD Output #0, image2, to 'output%03.bmp': Stream #0.0: Video: dnxhd, yuv422p, 1920x1080, q=2-31, 200 kb/s, 90k tbn, 25 tbc Stream mapping: Stream #0.0 -> #0.0 Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height av_transcode() OUT What's the problem? Thanks a lot. Kind Wishes Yours Chao.Guo

3 6

mkv to avi errors
by Rick C. 26 May '11

26 May '11

Hello, Can someone more knowledgeable than me take a look and see if you can tell what might be wrong here? That would be most helpful thank you! FFmpeg version git-N-28698-g621f4c9, Copyright (c) 2000-2011 the FFmpeg developers built on Mar 30 2011 13:29:37 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3) configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --arch=x86_64 --enable-runtime-cpudetect libavutil 50. 40. 0 / 50. 40. 0 libavcodec 52.116. 0 / 52.116. 0 libavformat 52.104. 0 / 52.104. 0 libavdevice 52. 4. 0 / 52. 4. 0 libavfilter 1. 76. 0 / 1. 76. 0 libswscale 0. 13. 0 / 0. 13. 0 [matroska,webm @ 0x10180b000] Estimating duration from bitrate, this may be inaccurate Seems stream 0 codec frame rate differs from container frame rate: 47.95 (48000/1001) -> 24.00 (24/1) Input #0, matroska,webm, from '/Users/Eric/Movies/Battle Los Angeles.mkv': Duration: 01:56:10.97, start: 0.000000, bitrate: 448 kb/s Stream #0.0(eng): Video: h264 (High), yuv420p, 1280x534 [PAR 1:1 DAR 640:267], 23.98 fps, 24 tbr, 1k tbn, 47.95 tbc (default) Metadata: title : Vid_1 Stream #0.1(eng): Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s (default) Metadata: title : Au_0 [buffer @ 0x101207ba0] w:1280 h:534 pixfmt:yuv420p [setdar @ 0x101207d80] a:91/38 [setdar @ 0x101207d80] w:1280 h:534 -> dar:91/38 sar:1/1 Output #0, avi, to '/Users/Eric/Movies/Battle Los Angeles.avi': Stream #0.0(eng): Video: mpeg4 (hq), yuv420p, 1280x534 [PAR 1:1 DAR 640:267], q=2-31, 3000 kb/s, 90k tbn, 29.97 tbc (default) Metadata: title : Vid_1 Stream #0.1(eng): Audio: libmp3lame, 48000 Hz, 5.1, s16, 192 kb/s (default) Metadata: title : Au_0 Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Error while opening encoder for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height

2 1

Enabling filters from the directory ./libavfilter/libmpcodecs
by Peter Bašista 26 May '11

26 May '11

Hello, I have just tried to use remove_logo filter and this is what I got: No such filter: 'remove_logo'. I get the same error when trying to use some other filters like tile, boxblur or rotate from the directory libavfilter/libmpcodecs My configuration doesn't show that these filters are enabled. But I have found no configure option to enable them. Does anyone know how to do it? Thank you in advance. Peter Basista

2 7

what does start mean in ffmpeg output
by Feurstein, Michael 26 May '11

26 May '11

Hi, I'm in the process of doing live streaming with ffmpeg and VLC. My biggest challenge right now is getting audio and video in sync. In my setup I am muxing a live udp stream from VLC with a live MP3 stream from Nicecast (environment: Mac OS X), restreaming it ffmpeg in order to sync it with VLC and stream it again (I know... kinda complicated but it works). I noticed the following output from ffmpeg, where start is always slightly different - I am assuming it has sth todo with the beginning of the udp stream. Input #0, mpegts, from, 'udp://224.0.0.1.1234': Duration: N/A, start: 2597.648522, bitrate: N/A When syncing the muxed stream with this output I need to delay audio by 8 seconds in VLC (--audio-desync=8000) Now my question is what does the start stand for officially - milliseconds, delay...?? Google only found me this (http://web.archiveorange.com/archive/v/KKJCyjygu3YKlis65Nfq) which apparently can't be up to date otherwise this would mean 2000 seconds timestamp Can anyone explain this to me? Thanks a lot! Greetings Michael Feurstein

2 2

Problem streaming H.264 over RTP without re-encdoing.
by yoda_alex 26 May '11

26 May '11

Hello all, I have an mp4 file with an H.264 video track, that I'm trying to stream over RTP, but I don't want to decode and re-encode the video (so I just want to demux it from the mp4 and re-mux in RTP). This is the command I run: ffmpeg -i day9_trumpets.mp4 -an -vcodec copy -f rtp rtp://172.18.41.122:10000 But this command returns instantly, and no RTP is sent on the wire (I've checked this using tcpdump). The output I get from ffmpeg is below. The starge thing is that when I decode and reencode the video (using a command like "ffmpeg -i day9_trumpets.mp4 -an -vcodec libx264 -vpre baseline -f rtp rtp://172.18.41.122:100002"), the RTP is sent correctly. Any ideas what I'm doing wrong? Thanks in advance! ------------------------------------ FFmpeg output: [root@brie MC 05] /videotools> ffmpeg -y -i day9_trumpets.mp4 -an -vcodec copy -f rtp rtp://172.18.41.122:10000 ffmpeg version 0.7-rc1, Copyright (c) 2000-2011 the FFmpeg developers built on May 25 2011 11:02:15 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48) configuration: --enable-gpl --enable-shared --disable-static --disable-yasm --enable-debug=3 --enable-libx264 --disable-optimizations --disable-stripping libavutil 50. 40. 1 / 50. 40. 1 libavcodec 52.120. 0 / 52.120. 0 libavformat 52.108. 0 / 52.108. 0 libavdevice 52. 4. 0 / 52. 4. 0 libavfilter 1. 77. 0 / 1. 77. 0 libswscale 0. 13. 0 / 0. 13. 0 Seems stream 0 codec frame rate differs from container frame rate: 59.83 (29917/500) -> 29.92 (359/12) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'day9_trumpets.mp4': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: isommp42 creation_time : 2010-10-26 20:01:29 Duration: 00:01:43.55, start: 0.000000, bitrate: 1968 kb/s Stream #0.0(und): Video: h264 (High), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 1835 kb/s, 29.96 fps, 29.92 tbr, 1k tbn, 59.83 tbc Metadata: creation_time : 1970-01-01 00:00:00 Stream #0.1(und): Audio: aac, 44100 Hz, stereo, s16, 127 kb/s Metadata: creation_time : 2010-10-26 20:01:30 Output #0, rtp, to 'rtp://172.18.41.122:10000': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: isommp42 creation_time : 2010-10-26 20:01:29 encoder : Lavf52.108.0 Stream #0.0(und): Video: libx264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], q=2-31, 1835 kb/s, 90k tbn, 29.92 tbc Metadata: creation_time : 1970-01-01 00:00:00 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 172.18.41.122 t=0 0 a=tool:libavformat 52.108.0 m=video 10000 RTP/AVP 96 b=AS:1835 a=rtpmap:96 H264/90000 a=fmtp:96 packetization-mode=1; sprop-parameter-sets=Z2QAH6wkiAUAW7ARAAADA+gAAOm6DxgyoA==,aO4yyLA= Press [q] to stop encoding frame= 3103 fps= 0 q=-1.0 Lsize= 0kB time=103.56 bitrate= 0.0kbits/s video:23199kB audio:0kB global headers:0kB muxing overhead -99.999882% -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/Problem-streaming-H-264-over-RTP-w… Sent from the FFmpeg-users mailing list archive at Nabble.com.

1 0

configure error with libavcodec/x86/dct32_sse
by Dave Rice 26 May '11

26 May '11

On two different machines (both Macs) on the git-master I'm getting this error during configure. CC libavcodec/x86/cavsdsp_mmx.o make: *** No rule to make target `libavcodec/x86/dct32_sse.c', needed by `libavcodec/x86/dct32_sse.o'. Stop. Any workaround? Dave Rice avpreserve.com

1 0