ffmpeg -i war-tlr1a_h1080p.mov -f flv -ac 2 1.flv FFmpeg version SVN-r10270, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-memalign-hack --enable-libmp3lame --enable-gpl --enable-shared --enable-swscaler --enable-libxvid --enable-libogg --enable-libvorbis --enable-libtheora libavutil version: 49.5.0 libavcodec version: 51.42.0 libavformat version: 51.12.2 built on Aug 31 2007 03:18:21, gcc: 4.1.3 20070812 (prerelease) (Debian 4.1.2-15) [mov,mp4,m4a,3gp,3g2,mj2 @ 0xb7f3af00]negative ctts, ignoring Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'war-tlr1a_h1080p.mov': Duration: 00:01:34.1, start: 0.000000, bitrate: 10471 kb/s Stream #0.0(eng): Video: h264, yuv420p, 1920x816, 23.98 fps(r) Stream #0.1(eng): Audio: mp4a / 0x6134706D, 48000 Hz, 5:1 Stream #0.2(eng): Data: tmcd / 0x64636D74 Resampling with input channels greater than 2 unsupported.Can't resample. Aborting. Aborted This is when i try -ac 2. Thanks in advance 2007/8/31, Stefano Sabatini <stefano.sabatini-lala at poste.it>:

On date Friday 2007-08-31 04:55:52 +0300, Ivan Nikolov encoded:

...

Hello,

I'm trying to convert .mov file to .flv.

1. First try: I execute: ffmpeg -i 1.mov 1.flv

Result: FFmpeg version SVN-r10270, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-memalign-hack --enable-libmp3lame --enable-gpl --enable-shared --enable-swscaler --enable-libxvid --enable-libogg --enable-libvorbis --enable-libtheora libavutil version: 49.5.0 libavcodec version: 51.42.0 libavformat version: 51.12.2 built on Aug 31 2007 03:18:21, gcc: 4.1.3 20070812 (prerelease) (Debian 4.1.2-15) [mov,mp4,m4a,3gp,3g2,mj2 @ 0xb7f80f00]negative ctts, ignoring Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov': Duration: 00:01:34.1, start: 0.000000, bitrate: 10471 kb/s Stream #0.0(eng): Video: h264, yuv420p, 1920x816, 23.98 fps(r) Stream #0.1(eng): Audio: mp4a / 0x6134706D, 48000 Hz, 5:1 Stream #0.2(eng): Data: tmcd / 0x64636D74 Output #0, flv, to '1.flv': Stream #0.0(eng): Video: flv, yuv420p, 1920x816, q=2-31, 200 kb/s, 23.98 fps(c) Stream #0.1(eng): Audio: libmp3lame, 48000 Hz, 5:1, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Error while opening codec for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height

2. Second try I execute: ffmpeg -i 1.mov -f flv -ar 44100 1.flv

Result: FFmpeg version SVN-r10270, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-memalign-hack --enable-libmp3lame --enable-gpl --enable-shared --enable-swscaler --enable-libxvid --enable-libogg --enable-libvorbis --enable-libtheora libavutil version: 49.5.0 libavcodec version: 51.42.0 libavformat version: 51.12.2 built on Aug 31 2007 03:18:21, gcc: 4.1.3 20070812 (prerelease) (Debian 4.1.2-15) [mov,mp4,m4a,3gp,3g2,mj2 @ 0xb7f66f00]negative ctts, ignoring Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov': Duration: 00:01:34.1, start: 0.000000, bitrate: 10471 kb/s Stream #0.0(eng): Video: h264, yuv420p, 1920x816, 23.98 fps(r) Stream #0.1(eng): Audio: mp4a / 0x6134706D, 48000 Hz, 5:1 Stream #0.2(eng): Data: tmcd / 0x64636D74 File '1.flv' already exists. Overwrite ? [y/N] y Resampling with input channels greater than 2 unsupported.Can't resample. Aborting. Aborted

Try to use -ac 2.

Cheers. -- ffmpeg-user random tip #7 If you're asking about problems with an ffmpeg tool, *always* post the command you're using and the complete output. _______________________________________________ ffmpeg-user mailing list ffmpeg-user at mplayerhq.hu http://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user

Stefano Sabatini wrote:

On date Friday 2007-08-31 16:01:51 +0200, Ivan Nikolov encoded:

...

ffmpeg -i war-tlr1a_h1080p.mov -f flv -ac 2 1.flv FFmpeg version SVN-r10270, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-memalign-hack --enable-libmp3lame --enable-gpl --enable-shared --enable-swscaler --enable-libxvid --enable-libogg --enable-libvorbis --enable-libtheora libavutil version: 49.5.0 libavcodec version: 51.42.0 libavformat version: 51.12.2 built on Aug 31 2007 03:18:21, gcc: 4.1.3 20070812 (prerelease) (Debian 4.1.2-15) [mov,mp4,m4a,3gp,3g2,mj2 @ 0xb7f3af00]negative ctts, ignoring Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'war-tlr1a_h1080p.mov': Duration: 00:01:34.1, start: 0.000000, bitrate: 10471 kb/s Stream #0.0(eng): Video: h264, yuv420p, 1920x816, 23.98 fps(r) Stream #0.1(eng): Audio: mp4a / 0x6134706D, 48000 Hz, 5:1 Stream #0.2(eng): Data: tmcd / 0x64636D74 Resampling with input channels greater than 2 unsupported.Can't resample.

^^^^^^^^^^^^^^

...

Aborting. Aborted

This is when i try -ac 2.

[...]

Please don't top post.

Well, indeed it's saying it doesn't support more than 2 *input* channels, so it's useless to force to 2 the number of output channels.

At this point I don't know if it is possible at all to perform such resampling with ffmpeg (maybe with --enable-liba52?).

Has someone any hints?

Cheers.

--enable-liba52 is not helping. The result is the well known error.