your input file is surround 5.1 and ffmpeg will not encode surround. Try to see if you can get the stereo file from the mts.
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FFMPEG fails to convert MTS into FLV
I'm trying to convert an 11MB MTS file into an FLV file using FFMPEG. I have installed FFMPEG on my CentOS 5.3 box via YUM.
When trying to convert a simple MTS file to FLV format an error occurs but I'm not sure why:
root@web3 [/usr/src]# ffmpeg -i 00103.mts -vcodec flv -f flv -r 25 -s 800x450 -aspect 16:9 -b 320k -g 160 -cmp 2 -subcmp 2 -mbd 2 -flags +aic+cbp+mv0+mv4 -trellis 2 -acodec libmp3lame -ac 2 -ar 44100 -ab 256k -y output.flv
FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --prefix=/usr --libdir=/usr/lib --shlibdir=/usr/lib --mandir=/usr/share/man --incdir=/usr/include --enable-libamr-nb --enable-libamr-wb --enable-libdirac --enable-libfaac --enable-libfaad --enable-libmp3lame --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-x11grab
libavutil 49.15. 0 / 49.15. 0
libavcodec 52.20. 0 / 52.20. 0
libavformat 52.31. 0 / 52.31. 0
libavdevice 52. 1. 0 / 52. 1. 0
libswscale 0. 7. 1 / 0. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Jul 24 2009 01:48:17, gcc: 4.1.2 20080704 (Red Hat 4.1.2-44)
Input #0, mpegts, from '00103.mts':
Duration: 00:00:10.95, start: 1.000067, bitrate: 8473 kb/s
Program 1
Stream #0.0[0x1011]: Video: h264, yuv420p, 1440x1080 [PAR 4:3 DAR 16:9], 50 tbr, 90k tbn, 50 tbc
Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s
Output #0, flv, to 'output.flv':
Stream #0.0: Video: flv (hq), yuv420p, 800x450 [PAR 1:1 DAR 16:9], q=2-31, 320 kb/s, 90k tbn, 25 tbc
Stream #0.1: Audio: libmp3lame, 44100 Hz, stereo, s16, 256 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Press [q] to stop encoding
[h264 @ 0x9b4a430]missing picture in access unit9.98 bitrate= 751.3kbits/s
Last message repeated 1 times
[libmp3lame @ 0x9c41300]lame: output buffer too small (buffer index: 8359, free bytes: 1433)
Audio encoding failed
root@web3 [/usr/src]#
Can anyone help me please?
Thanks in advance.
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by: IbanUlovPosted on 2009-10-19 at 14:41:51ID: 25609302
[libmp3lame @ 0x9c41300]lame: output buffer too small (buffer index: 8359, free bytes: 1433)
Audio encoding failed
It looks like when you are encoding you pass a buffer too small. Usually when you encode the size of the buffer to encode must be the size of the buffer decoded. So you will be sure you have sufficient space. Some codecs need this buffer be a 8 multiple (more for video than for audio).