February 2007 - ffmpeg-user - lists.ffmpeg.org

Frame sizes
by estelasousavieira＠hotmail.com 31 Oct '07

31 Oct '07

I need to obtain the sizes of the I, P and B frames of the video of a DVD. Is this possible with ffmpeg? _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

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VFW Capture support
by ramiro＠lisha.ufsc.br 23 Oct '07

23 Oct '07

Hello, First attempt for VFW capture support in Windows. For testing purposes only! Enable it with: ./configure --enable-memalign-hack --enable-vfw-cap It prints lots of (somewhat useless) debug messages. Image is upside down =). I just have to find the right PIX_FMT and width/height... I'm way too tired to look at that now. Note: Run this FFmpeg from Windows' command prompts (cmd or command)! *Not MSys!*. This patch includes the patch I sent to ffmpeg-devel for interactive support for Windows. You must kill it with 'q' or Ctrl+C, or else the capture device won't be released, and you'll have to reboot Windows to get it back. MSys doesn't capture 'q' nor Ctrl+C, so it's doomed to make you loose control of the device. Ramiro Polla

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Video stream extreamly blocky, API changed between fall 2004 and spring 2005?
by sverker＠abrahamsson.com 12 May '07

12 May '07

Hi, I use mpeg4ip for streaming to mobile phones. It use ffmpeg for encoding mpeg4 to encode a stream which is size 176x144 at 90 kbps. This works fine as long as I use a ffmpeg package from sometime early fall 2004 but somewhere between then and late spring 2005 there was a change in ffmpeg so if I build against a later ffmpeg package I get a video stream which is extreamly blocky with huge pixels. I suspect that some parameter has been added which needs to be initialized, I tried to figure it out by looking at diffs of ffmpeg.c and avcodec.h but haven't found the right one to set. Any help to solve this issue is highly aprechiated, below is the initialization code from mp4live video_ffmpeg.cpp. bool CFfmpegVideoEncoder::Init (void) { avcodec_init(); avcodec_register_all(); if (m_push != NULL) { delete m_push; m_push = NULL; } double rate; rate = TimestampTicks / Profile()->GetFloatValue(CFG_VIDEO_FRAME_RATE); m_frame_time = (Duration)rate; if (strcasecmp(Profile()->GetStringValue(CFG_VIDEO_ENCODING), VIDEO_ENCODING_MPEG4) == 0) { m_push = new CTimestampPush(1); m_codec = avcodec_find_encoder(CODEC_ID_MPEG4); m_media_frame = MPEG4VIDEOFRAME; #ifdef OUTPUT_RAW m_outfile = fopen("raw.m4v", FOPEN_WRITE_BINARY); #endif } else if (strcasecmp(Profile()->GetStringValue(CFG_VIDEO_ENCODING), VIDEO_ENCODING_H263) == 0) { m_push = new CTimestampPush(1); m_codec = avcodec_find_encoder(CODEC_ID_H263); m_media_frame = H263VIDEOFRAME; #ifdef OUTPUT_RAW m_outfile = fopen("raw.263", FOPEN_WRITE_BINARY); #endif } else { m_push = new CTimestampPush(3); m_codec = avcodec_find_encoder(CODEC_ID_MPEG2VIDEO); m_media_frame = MPEG2VIDEOFRAME; #ifdef OUTPUT_RAW m_outfile = fopen("raw.m2v", FOPEN_WRITE_BINARY); #endif } if (m_codec == NULL) { error_message("Couldn't find codec"); return false; } m_avctx = avcodec_alloc_context(); m_picture = avcodec_alloc_frame(); m_avctx->width = Profile()->m_videoWidth; m_avctx->height = Profile()->m_videoHeight; m_avctx->bit_rate = Profile()->GetIntegerValue(CFG_VIDEO_BIT_RATE) * 1000; #ifndef HAVE_AVCODECCONTEXT_TIME_BASE m_avctx->frame_rate = (int)(Profile()->GetFloatValue(CFG_VIDEO_FRAME_RATE) + 0.5); m_avctx->frame_rate_base = 1; #else m_avctx->time_base = (AVRational){1, (int)(Profile()->GetFloatValue(CFG_VIDEO_FRAME_RATE) + .5)}; m_avctx->strict_std_compliance = -1; m_avctx->pix_fmt = PIX_FMT_YUV420P; m_avctx->profile = Profile()->m_videoMpeg4ProfileId; #endif if (Profile()->GetIntegerValue(CFG_VIDEO_MPEG4_PAR_WIDTH) > 0 && Profile()->GetIntegerValue(CFG_VIDEO_MPEG4_PAR_HEIGHT) > 0) { #ifndef HAVE_AVRATIONAL float asp = (float)Profile()->GetIntegerValue(CFG_VIDEO_MPEG4_PAR_WIDTH); asp /= (float)Profile()->GetIntegerValue(CFG_VIDEO_MPEG4_PAR_HEIGHT); m_avctx->aspect_ratio = asp; #else AVRational asp = {Profile()->GetIntegerValue(CFG_VIDEO_MPEG4_PAR_WIDTH), Profile()->GetIntegerValue(CFG_VIDEO_MPEG4_PAR_HEIGHT)}; m_avctx->sample_aspect_ratio = asp; #endif } #if 0 debug_message("ffmpeg %u x %u bit rate %u media %d", Profile()->m_videoWidth, Profile()->m_videoHeight, m_avctx->bit_rate, m_media_frame); #endif m_usingBFrames = false; m_BFrameCount = 0; if (m_media_frame == MPEG2VIDEOFRAME) { m_avctx->gop_size = 15; m_avctx->b_frame_strategy = 0; m_avctx->max_b_frames = 2; m_usingBFrames = true; m_BFrameCount = 2; } else { if (m_media_frame == H263VIDEOFRAME) { m_avctx->bit_rate = Profile()->GetIntegerValue(CFG_VIDEO_BIT_RATE) * 800; m_avctx->bit_rate_tolerance = Profile()->GetIntegerValue(CFG_VIDEO_BIT_RATE) * 200; #if 0 // this makes file writing difficult m_avctx->rtp_mode = true; m_avctx->rtp_payload_size = Profile()->GetIntegerValue(CONFIG_RTP_PAYLOAD_SIZE); #endif } else if (m_media_frame == MPEG4VIDEOFRAME) { if (Profile()->GetBoolValue(CFG_VIDEO_USE_B_FRAMES)) { m_avctx->max_b_frames = Profile()->GetIntegerValue(CFG_VIDEO_NUM_OF_B_FRAMES); m_usingBFrames = true; m_BFrameCount = m_avctx->max_b_frames; } } m_key_frame_count = m_avctx->gop_size = (int) ((Profile()->GetFloatValue(CFG_VIDEO_FRAME_RATE)+0.5) * Profile()->GetFloatValue(CFG_VIDEO_KEY_FRAME_INTERVAL)); m_avctx->flags |= CODEC_FLAG_GLOBAL_HEADER; debug_message("key frame count is %d", m_key_frame_count); } m_count = 0; ffmpeg_interface_lock(); if (avcodec_open(m_avctx, m_codec) < 0) { ffmpeg_interface_unlock(); error_message("Couldn't open codec"); return false; } ffmpeg_interface_unlock(); m_first_frame = true; return true; } /Sverker

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FFMpeg incorrectly parses file with meta data.
by grant＠bluetube.com 25 Apr '07

25 Apr '07

Hi guys, I posted example files a few days ago as Baptiste encouraged me to, and was hoping someone could take a look. links : http://www.bluetube.com//temp/ffmpeg/SD/00519.zip <http://www.bluetube.com//temp/ffmpeg/SD/00519.zip> http://www.bluetube.com//temp/ffmpeg/SD/00520.zip <http://www.bluetube.com//temp/ffmpeg/SD/00520.zip> http://www.bluetube.com//temp/ffmpeg/HD/00517.zip <http://www.bluetube.com//temp/ffmpeg/HD/00517.zip> http://www.bluetube.com//temp/ffmpeg/HD/00518.zip <http://www.bluetube.com//temp/ffmpeg/HD/00518.zip> FFMPEG states these files have mp3 or mp2 audio and it couldn't find the codec but these files do not have that format, its raw pcm audio. the files are from a sony XD cam and are wrapped into quicktimes. The have Camera META data in them. If we take the files and run them through final cut pro and re-save, the camera meta data is removed and ffmpeg correctly processes them. Unfortunately the workflow we have requires us to be able to take the quicktime from the sony transfer program with the camera meta data present and produce thumbnails. sample command line : /Applications/xampp/htdocs/app/bin/ffmpeg -an -i "/Applications/xampp/ htdocs/app/webroot/assets/asset165/wolf00261.mov" -ss 00:00:01 -t 00:00:01 -r 1 -y -s 80x60 "/Applications/xampp/htdoc s/app/webroot/assets/asset165/wolf00261"%d.jpg error : FFmpeg version SVN-r7715, Copyright (c) 2000-2006 Fabrice Bellard, et al. configuration: --enable-mp3lame --enable-static --disable-vhook libavutil version: 49.2.0 libavcodec version: 51.29.0 libavformat version: 51.8.0 built on Jan 25 2007 22:18:56, gcc: 4.0.1 (Apple Computer, Inc. build 5367) [mp3 @ 0x3d2060]Could not find codec parameters (Audio: mp3, 64 kb/s) Cheers, Grant.

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Uninstalling and reinstalling ffmpeg
by wolf＠wolffebrothers.com 24 Mar '07

24 Mar '07

Hello. I have installed ffmpeg using the svn command found on the documentation of ffmpeg. I have two questions. 1. How do I uninstall the ffmpeg and 2. Should I do the svn to install the newer version or is their something better I can be doing. Thanks Josh

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How to convert .3g2 .mp4 files to SWF format
by shamjuj＠yahoo.com 20 Mar '07

20 Mar '07

Dear all I'm getting errors when I tried to convert some .3g2, .mp4 files to SWF format. The output listings are given below. Please suggest me some solution. Thanks Shamju Joseph ---------------------------------------------------- bash-2.05b$ ./ffmpeg -sameq -i 0616060922.3g2 -f swf 0616060922.swf FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2004 Fabrice Bellard configuration: --extra-cflags=-I/home/shamju/Demo1/lame/include --extra-ldflags=-L/home/shamju/Demo1/lame/lib --enable-mp3lame --prefix=/home/shamju/Demo1/ffmpegsvn --cc=gcc32 libavutil version: 49.0.0 libavcodec version: 51.11.0 libavformat version: 50.5.0 built on Aug 30 2006 11:32:41, gcc: 3.2.3 20030422 (Red Hat Linux 3.2.3-6) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '0616060922.3g2': Duration: 00:00:14.8, start: 0.000000, bitrate: 118 kb/s Stream #0.0(eng): Video: h263, yuv420p, 176x144, 29.97 fps(r) Stream #0.1(eng): Audio: mp4a / 0x6134706D, 8000 Hz, stereo Output #0, swf, to '0616060922.swf': Stream #0.0: Video: flv, yuv420p, 176x144, q=2-31, 200 kb/s, 29.97 fps(c) Stream #0.1: Audio: mp3, 8000 Hz, stereo, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Unsupported codec (id=86043) for input stream #0.1 ---------------------------------------------------- bash-2.05b$ ./ffmpeg -sameq -i GetTech.mov -f swf GetTech.swf FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2004 Fabrice Bellard configuration: --extra-cflags=-I/home/shamju/Demo1/lame/include --extra-ldflags=-L/home/shamju/Demo1/lame/lib --enable-mp3lame --prefix=/home/shamju/Demo1/ffmpegsvn --cc=gcc32 libavutil version: 49.0.0 libavcodec version: 51.11.0 libavformat version: 50.5.0 built on Aug 30 2006 11:32:41, gcc: 3.2.3 20030422 (Red Hat Linux 3.2.3-6) [mov,mp4,m4a,3gp,3g2,mj2 @ 0x8339b5c]negative ctts, ignoring Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'GetTech.mov': Duration: 00:00:31.2, start: 0.000000, bitrate: 152 kb/s Stream #0.0(eng): Audio: mp4a / 0x6134706D, 32000 Hz, mono Stream #0.1(eng): Video: h264, yuv420p, 160x120, 9.99 fps(r) Output #0, swf, to 'GetTech.swf': Stream #0.0: Video: flv, yuv420p, 160x120, q=2-31, 200 kb/s, 9.99 fps(c) Stream #0.1: Audio: mp3, 32000 Hz, mono, 64 kb/s Stream mapping: Stream #0.1 -> #0.0 Stream #0.0 -> #0.1 [flv @ 0x83c180c]removing common factors from framerate Unsupported codec (id=86018) for input stream #0.0 ------------------------------------------------- bash-2.05b$ ./ffmpeg -sameq -i 2863.wmv -f swf 2863.swf FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2004 Fabrice Bellard configuration: --extra-cflags=-I/home/shamju/Demo1/lame/include --extra-ldflags=-L/home/shamju/Demo1/lame/lib --enable-mp3lame --prefix=/home/shamju/Demo1/ffmpegsvn --cc=gcc32 libavutil version: 49.0.0 libavcodec version: 51.11.0 libavformat version: 50.5.0 built on Aug 30 2006 11:32:41, gcc: 3.2.3 20030422 (Red Hat Linux 3.2.3-6) Seems that stream 1 comes from film source: 1000.00 (1000/1) -> 24.00 (24/1) Input #0, asf, from '2863.wmv': Duration: 00:00:41.0, start: 3.000000, bitrate: 408 kb/s Stream #0.0: Audio: wmav2, 32000 Hz, stereo, 48 kb/s Stream #0.1: Video: wmv2, yuv420p, 320x240, 24.00 fps(r) Output #0, swf, to '2863.swf': Stream #0.0: Video: flv, yuv420p, 320x240, q=2-31, 200 kb/s, 24.00 fps(c) Stream #0.1: Audio: mp3, 32000 Hz, stereo, 64 kb/s Stream mapping: Stream #0.1 -> #0.0 Stream #0.0 -> #0.1 Could not write header for output file #0 (incorrect codec parameters ?) ---------------------------------------------------- bash-2.05b$ ./ffmpeg -sameq -i MP4sample_movie.mp4 -f swf MP4sample_movie.swf FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2004 Fabrice Bellard configuration: --extra-cflags=-I/home/shamju/Demo1/lame/include --extra-ldflags=-L/home/shamju/Demo1/lame/lib --enable-mp3lame --prefix=/home/shamju/Demo1/ffmpegsvn --cc=gcc32 libavutil version: 49.0.0 libavcodec version: 51.11.0 libavformat version: 50.5.0 built on Aug 30 2006 11:32:41, gcc: 3.2.3 20030422 (Red Hat Linux 3.2.3-6) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MP4sample_movie.mp4': Duration: 00:01:14.3, start: 0.000000, bitrate: 902 kb/s Stream #0.0(eng): Data: mp4s / 0x7334706D Stream #0.1(eng): Data: mp4s / 0x7334706D Stream #0.2(eng): Video: mpeg4, yuv420p, 240x176, 29.97 fps(r) Stream #0.3(eng): Audio: mp4a / 0x6134706D, 44100 Hz, stereo Output #0, swf, to 'MP4sample_movie.swf': Stream #0.0: Video: flv, yuv420p, 240x176, q=2-31, 200 kb/s, 29.97 fps(c) Stream #0.1: Audio: mp3, 44100 Hz, stereo, 64 kb/s Stream mapping: Stream #0.2 -> #0.0 Stream #0.3 -> #0.1 Unsupported codec (id=86018) for input stream #0.3 ------------------------------------------------- __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Image Lists
by alan＠escribe.co.uk 19 Mar '07

19 Mar '07

Sirs, I have been playing around with SVN-r7260 using a command like; ffmpeg -i %02d.jpg -f mpeg2video out.avi This does exactly what I expected ... in that it takes the few jpg images and creates a short movie at 1 image per frame. However ... I don't just have a few jpg images ... but a collection of around 50,000 that I wish to assemble into a 3-ish hour movie sequence. So a few questions; 1. Is FFMPEG really an appropriate tool for creating such a movie sequence or am I barking up the wrong tree? 2. Is there a command line mechanism for providing, for example, the name of a text file containing the names of all of these images? And if not ... then would anyone else in the user community likely benefit from me adding such functionality? 3. If not 2, then I am stuck using '-i %05d.jpg' and having to relocate all of my images into one *big* directory for processing. Are there any internal limits on '-i' that I should consider before following this route? Many thanks to anyone who has insight into this area of ffmpeg and is who is willing to respond to me. Alan.

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Undefined reference to `url_fopen(ByteIOContext*, char const*, int)'
by dariogriffo＠gmail.com 18 Mar '07

18 Mar '07

Hi, I begin to make my first program, but encountered a first linking problem. Here is my code if ((error=url_fopen(&oc->pb,argv[3], URL_WRONLY)) < 0) { std::cerr<<"Cant open output file: "<<argv[3]<<"\n"; outputerror(error); av_close_input_file(ic); return -1; } Compiling line: g++ test.cpp -lavformat -lavcodec -lavutil -lz -lm -o test the header: #include <ffmpeg/avio.h> is also included, I use debian etch and have made apt-get install for all the libraries. Any idea?

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h263 quality problem
by pedro.barradas＠link.pt 15 Mar '07

15 Mar '07

Hi everyone, I'm doing a school project, and i need to generate a 3gp file from a image. I managed to do it, but when i see the video in a SIP softphone, the quality is poor, and sometimes part of the image disapear during play. The command-line i used is: ffmpeg -loop_input -i image%d.jpg -vcodec h263 -b 42k -r 10 -t 30 -s 176x144 -f 3gp video.3gp I tried with diferent values of bitrate, but still no improvements. What could be the problem? is it in the command-line? The videos i need have no motion, they are created from just one image. Is there a different way to do this rather than "-loop_input -i image%d.jpg"? My ffmpeg installation is: FFmpeg version SVN-r7793, Copyright (c) 2000-2006 Fabrice Bellard, et al. configuration: --enable-memalign-hack --enable-gpl --enable-amr_nb --enable-a mr_wb libavutil version: 49.3.0 libavcodec version: 51.29.0 libavformat version: 51.8.0 built on Feb 2 2007 12:40:42, gcc: 3.4.2 (mingw-special) I will appreciate any help given. Best Regards, Pedro

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flv to mp3 conversion - unsupported codec
by banan＠student.ltu.se 15 Mar '07

15 Mar '07

Andy Tawse wrote: > Hi > > I'm posting here after trawling the list archive. > > I'm trying to convert audio FLVs (created with Flash Media Server) into > MP3s. > > I got the latest release from SVN today and built with lame mp3 support. > Here's what happens > Hi, as said before, the codec is the Nelly Moser ASAO codec, for which there currently is no decoder available yet. Last year a company put up a bounty for the creation of a free encoder and decoder. I contacted one person handling the bounty and he said that they were beta testing the code. He also said that he would post a message to ffmpeg-dev when the code was released. So if this information is correct we might have a Nelly Moser codec soon. http://www.lisog.org/projekte/supported_projects/bounty-programm/nellymoser… MvH Benjamin Larsson

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