February 2008 - ffmpeg-user - lists.ffmpeg.org

.m4a to .flv - image/video fails
by nreddig＠ptd.net 31 Mar '12

31 Mar '12

Hi all, I have greatly appreciated the information I have already gleaned from reading this forum. However I still can not solve my current problem. I am trying to convert from .m4a to .flv. These are podcast files (.m4a) built in garage band. Pictures were added as well and we would like to use this format to create weekly announcements because Garage Band is so easy for our non-technically oriented staff. Using ffmpeg the audio converts just fine but the "video" is not right. I guess it's because these files include chapter data not actual video. However when I convert it to any format the images fly through at different rates, then it seems to get stuck on a picture in the middle. The format I would like to convert to is flash so that I can easy display multiple announcement files using a flash player. I can convert .mov to .flv no problem. Converting .m4a to .mov and then .flv doesn't produce any better results. Here are the before and after files: http://www.warwicksd.org/warwick.m4a http://www.warwicksd.org/output.flv I used the following to get my conversion: ffmpeg -i warwick.m4a -b 300k -r 12 -s 300x300 -ar 22050 -y -ab 96k output.flv FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-libfaac --enable-libfaad --enable- libmp3lame --disable-vhook --enable-shared libavutil version: 49.5.0 libavcodec version: 51.44.0 libavformat version: 51.14.0 built on Oct 22 2007 15:31:25, gcc: 3.3 20030304 (Apple Computer, Inc. build 1640) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'warwick.m4a': Duration: 00:00:55.9, start: 0.000000, bitrate: 100 kb/s Stream #0.0(eng): Audio: mpeg4aac, 44100 Hz, stereo Stream #0.1(eng): Video: mjpeg, yuvj420p, 300x300, 44100.00 fps(r) Stream #0.2(eng): Data: tx3g / 0x67337874 Stream #0.3(eng): Data: text / 0x74786574 Output #0, flv, to 'output.flv': Stream #0.0(eng): Video: flv, yuv420p, 300x300, q=2-31, 300 kb/s, 12.00 fps (c) Stream #0.1(eng): Audio: libmp3lame, 22050 Hz, stereo, 96 kb/s Stream mapping: Stream #0.1 -> #0.0 Stream #0.0 -> #0.1 Press [q] to stop encoding frame= 83 fps= 21 q=2.0 Lsize= 1099kB time=6.9 bitrate=1301.6kbits/s video:70kB audio:657kB global headers:0kB muxing overhead 51.296550% .mov files convert nicely to .flv but these .m4as are just not working. Our current staff is very eager to use these Garage Band files to communicate announcements. I have been so desperate to get this particular file type to convert that I have been experimenting with grabbing the frames every 5 secs. and then rebuilding the images into video. This produces strange results and seems to be more programming then should be necessary. Thanks in advanced for any solutions you can provide. Nancy Reddig Web Programmer Warwick SD

4 3

resize and imlib2 vhook in one command ?
by code＠u-turnmedia.com 02 Oct '08

02 Oct '08

hi, i would like to resize video and overlay with image. when i resize video, e.g. from 624x352 to 320x240, and use imlib2 vhook in one line, i get 320x240 video with small picture in the corner: ffmpeg -i infile.avi -cropright 52 -cropleft 52 -s 320x240 -aspect 1.333 -vhook './imlib2.so -x 0 -y 0 -i image.png' outfile.avi i know that options for imlib2 are -x -y for coordinates, and i would like to know how to use """ Expressions are functions of these variables: N frame number (starting at zero) H frame height W frame width h image height w image width X previous x coordinate of text or image Y previous y coordinate of text or image """ precisely, how do i tell to the image to keep the same size ? do i have to use two commands ? like in first command resize video, and in second use vhook ? thanks Co.De. --

3 2

DVCPRO HD?
by stefan＠sfendt.de 17 Mar '08

17 Mar '08

Hi, if I understand http://www.dcine.com/sightings.html correctly, there allready is DVCPRO HD support in ffmpeg since march 2007? As my current SVN-checkout does not like it nonetheless, do I need to issue any special configure options to enable that codec? Or doesn't ffmpeg support it? cu Stefan

5 8

splitting video using ffmpeg ?
by majithia＠streamsage.com 14 Mar '08

14 Mar '08

Hi, I'm trying to split an Mpeg2 video into small segments of 30 secs or less using the below command : ffmpeg -i input.mpg -ss 00:00:00 -t 00:00:20 out.mpg Further, I am trying to process out.mpg to extract motion vectors and run into the "ISO_11172_END_CODE missing(0x0)" error. Is it possible to tell ffmpeg to retain the "end_code" or add the "end_code" while splitting the original mpeg video ? Please pardon me if this is naive question, I'm new to using the field and also to using ffmpeg. Any help regarding this will be immensely helpful. Thanks much, -Hemali

2 1

iframe identification
by brennhill＠gmail.com 14 Mar '08

14 Mar '08

Is there any function in ffmpeg that lets you know what type of frame (i frame, b frame, etc) a certain frame # is? I am assuming some form of mpeg stream but I am curious if there is any sort of codec that I could extract this info from. If not with ffmpeg, does anyone have a suggestion as to what I could use to get this information?

3 2

60i AVCHD -> NTCS DVD encoding results in slow video
by jnstroik＠wisc.edu 06 Mar '08

06 Mar '08

FFMPEG Users, I have a Canon HG10 that creates anamorphic AVCHD files in 1440x1080 and would like to encode to the NTSC DVD standard. I've tried a variety of options with ffmpeg, including specifying the input rate, but they all get approximately the same result as: ---- ffmpeg -i <avchd-input-file> -target ntsc-dvd output.vob ---- The video plays slowly (just over half speed) and the audio plays at normal speed. When I begin the process, ffmpeg says this: ---- Input #0, mpegts, from '00002.mts': Duration: 00:04:01.2, start: 0.492856, bitrate: 15563 kb/s Program 1 Stream #0.0[0x1011]: Video: h264, yuv420p, 1440x1080 [PAR 4:3 DAR 16:9], 29.97 tb(r) Stream #0.1[0x1100]: Audio: liba52, 48000 Hz, stereo, 256 kb/s Output #0, dvd, to 'output.vob': Stream #0.0: Video: mpeg2video, yuv420p, 720x480 [PAR 32:27 DAR 16:9], q=2-31, 6000 kb/s, 29.97 tb(c) Stream #0.1: Audio: ac3, 48000 Hz, stereo, 448 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 ---- I set ffmpeg to encode a 10 second section of file with -ss 25 -t 10. When I play the file back in mplayer, I notice the following: ---- A: 10.5 V: 20.4 A-V: -9.820 ct: -0.927 597/597 3% 0% 0.2% 0 0 ---- Just under 20 seconds of real time passes. The audio completes well before the video does. The video is also encoded at a noticeably slow frame rate. My system isn't fast enough to decode AVCHD in real time using ffplay, so this may be a factor. However, I don't mind if the decoding/encoding occurs much slower than real time. Best, Jesse

9 24

av_interleaved_write_frame(): Error while opening file
by gfrankliu＠gmail.com 04 Mar '08

04 Mar '08

ffmpeg -i 08112007007.mp4 -ar 22050 -f flv -y frank.flv FFmpeg version SVN-r10986, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --prefix=/usr --libdir=/usr/lib --mandir=/usr/share/man --incdir=/usr/include/ffmpeg --enable-libmp3lame --enable-libogg --enable-libvorbis --enable-libfaad --enable-libfaac --enable-pp --enable-shared --enable-pthreads --enable-gpl --enable-libamr-nb --enable-libamr-wb --disable-strip libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 51.18.0 built on Nov 9 2007 17:42:28, gcc: 4.1.1 20070105 (Red Hat 4.1.1-52) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '08112007007.mp4': Duration: 00:00:07.2, start: 0.000000, bitrate: 2504 kb/s Stream #0.0(und): Video: mpeg4, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 30000.00 fps(r) Stream #0.1(und): Audio: mpeg4aac, 48000 Hz, stereo Output #0, flv, to 'frank.flv': Stream #0.0(und): Video: flv, yuv420p, 640x480 [PAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 30000.00 fps(c) Stream #0.1(und): Audio: libmp3lame, 22050 Hz, stereo, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding error, non monotone timestamps 1 >= 1 av_interleaved_write_frame(): Error while opening file Test file can be found at http://timepassindia.com/08112007007.mp4 Any thoughts? Thanks! Frank

2 1

unconpressed swf to flv format conversion error
by harijay＠gmail.com 29 Feb '08

29 Feb '08

Hi I am trying to convert an swf file I uncompressed with the cw2fs utility into a flv file I get the following error while transcoding the file. "Unsupported codec (id=0) for input stream #0.1 which has codec as mp3" The stream 0.1 has codec listed as mp3 and I do have mp3 support compiled in and have transcoded other videos without a problem. The stderr stream is localhost 200 # ffmpeg -i out.swf -s 640x480 -acodec copy -y out.flv FFmpeg version SVN-r11200, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-shared --enable-pthreads --enable-x11grab --enable-liba52 --enable-libamr-nb --enable-libamr-wb --enable-libdc1394 --enable-libfaac --enable-libfaad --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-gpl libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 10 2007 16:44:42, gcc: 4.1.1 (Gentoo 4.1.1) Input #0, swf, from 'out.swf': Duration: 00:20:44.1, bitrate: 63 kb/s Stream #0.0: Audio: mp3, 44100 Hz, mono, 64 kb/s Stream #0.1: Video: 0x0000, 10.00 tb(r) PIX_FMT_YUV420P will be used as an intermediate format for rescaling Output #0, flv, to 'out.flv': Stream #0.0: Video: flv, yuv420p, 640x480 [PAR 4:1 DAR 16:3], q=2-31, 200 kb/s, 10.00 tb(c) Stream #0.1: Audio: libmp3lame, 44100 Hz, mono, 64 kb/s Stream mapping: Stream #0.1 -> #0.0 Stream #0.0 -> #0.1 [flv @ 0x2b1a96b112c0]removing common factors from framerate Unsupported codec (id=0) for input stream #0.1 Thanks for your help harijay

3 4

ISO/IEC 13818-1:2007
by brianmarete＠gmail.com 29 Feb '08

29 Feb '08

Hello, Anyone with a copy of ISO/IEC 13818-1:2007 that they can send me? ;) Even a usable draft of the (2007) version would be fine. I know the 2001 version is available on the net, but it does not contain information for muxing AVC into the TS. Thanks. -- B. Gitonga Marete Tel: +254-722-151-590

2 1

error: non monotone timestamps ??
by seandarcy2＠gmail.com 29 Feb '08

29 Feb '08

I'm trying to convert a dvd to an avi file to stream to a ps3. So I used dumpsteam in mplayer to create a vob file: mplayer dvd://1 -dumpstream -dumpfile dvd.vob and then tried to use ffmpeg to put the vob into an avi ccontainer: ffmpeg -i dvd.vob -vcodec copy -acodec copy dvd.avi FFmpeg version SVN-r12192, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --incdir=/usr/include/ffmpeg --extra-cflags=-fPIC --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libfaad --enable-libfaac --enable-libgsm --enable-libxvid --enable-libx264 --enable-liba52 --enable-liba52bin --enable-pp --enable-swscaler --enable-shared --enable-pthreads --disable-debug --cpu=nocona --enable-gpl libavutil version: 49.6.0 libavcodec version: 51.50.1 libavformat version: 52.7.0 libavdevice version: 52.0.0 built on Feb 24 2008 20:36:38, gcc: 4.1.2 20070925 (Red Hat 4.1.2-33) Seems stream 0 codec frame rate differs from container frame rate: 29.97 (30000/1001) -> 59.94 (60000/1001) Input #0, mpeg, from 'dvd.vob': Duration: 01:17:53.7, start: 0.201311, bitrate: 12349 kb/s Stream #0.0[0x1e0]: Video: mpeg2video, yuv420p, 720x480 [PAR 32:27 DAR 16:9], 9800 kb/s, 59.94 tb(r) Stream #0.1[0x20]: Subtitle: dvdsub Stream #0.2[0x21]: Subtitle: dvdsub Stream #0.3[0x22]: Subtitle: dvdsub Stream #0.4[0x23]: Subtitle: dvdsub Stream #0.5[0x80]: Audio: liba52, 48000 Hz, 5:1, 448 kb/s Stream #0.6[0x81]: Audio: liba52, 48000 Hz, stereo, 192 kb/s Stream #0.7[0x82]: Audio: liba52, 48000 Hz, stereo, 192 kb/s Stream #0.8[0x83]: Audio: liba52, 48000 Hz, stereo, 192 kb/s Stream #0.9[0x84]: Audio: liba52, 48000 Hz, stereo, 192 kb/s Output #0, avi, to 'dvd.avi': Stream #0.0: Video: mpeg2video, yuv420p, 720x480 [PAR 0:1 DAR 0:1], q=2-31, 9800 kb/s, 29.97 tb(c) Stream #0.1: Audio: ac3, 48000 Hz, 5:1, 448 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.5 -> #0.1 Press [q] to stop encoding error, non monotone timestamps 348 >= 348 av_interleaved_write_frame(): Error while opening file Is this an mplayer problem? Any way to fix it? sean

2 4