Uncompressed quicktime to flv conversion

[Ian J Richards]

I need to create flv files from a final cut pro project.

FFMpegX creates them fine if I create a quicktime using DV compression but the quality is not good enough for final use on the clients website (I think this is because the quicktime with DV compression is soft compared to an uncompressed quicktime)

When I create an uncompressed 8 bit 4:2:2 quicktime, using compressor, which looks much crisper FFmpegX cannot create a FLV from it, log report below.

Encoding started on Sun Nov 4 08:35:09 GMT 2007
FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/ian/Desktop/BAA Academy-job environment new gfx-Uncompressed 8-bit PAL deinterlaced.mov':
Duration: 00:02:03.8, start: 0.000000, bitrate: 167428 kb/s
Stream #0.0(eng), 25.00 fps(r): Video: Uncompressed 8-bit 4:2:2, 720x576
Stream #0.1(eng): Audio: pcm_s16be, 48000 Hz, stereo, 1536 kb/s
Codec type mismatch for mapping #0.1 -> #0.0


This is with invert mapping selected in the audio tab, if I don't select invert mapping the process fails (See below)

FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Sun Nov 4 08:35:30 GMT 2007
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/ian/Desktop/BAA Academy-job environment new gfx-Uncompressed 8-bit PAL deinterlaced.mov':
Duration: 00:02:03.8, start: 0.000000, bitrate: 167428 kb/s
Stream #0.0(eng), 25.00 fps(r): Video: Uncompressed 8-bit 4:2:2, 720x576
Stream #0.1(eng): Audio: pcm_s16be, 48000 Hz, stereo, 1536 kb/s
Output #0, flv, to '/Users/ian/Desktop/BAA Academy-job environment new gfx-Uncompressed 8-bit PAL deinterlaced.mov.ff.flv':
Stream #0.0, 12.00 fps(c): Video: flv, yuv420p, 320x240, q=2-15, 200 kb/s
Stream #0.1: Audio: mp3, 22050 Hz, stereo, 56 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Unsupported codec (id=0) for input stream #0.0


Any ideas, or does FFmpeg X just not support uncompressed 4:2:2 quicktimes?

Thanks in advance for any feed back.

[Case]

Try the 'Decode with QT' checkbox in the Options tab. That enables ffmpegX to read QuickTime files that ffmpeg may not work well with.

[Ian J Richards]

With decode with QT selected it creates a 0KB file in less than a second

This is the progress log

FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mon Nov 5 09:35:15 GMT 2007
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/ian/Desktop/BAA Academy-job environment new gfx-Uncompressed 8-bit PAL deinterlaced.mov':
Duration: 00:02:03.8, start: 0.000000, bitrate: 167428 kb/s
Stream #0.0(eng), 25.00 fps(r): Video: Uncompressed 8-bit 4:2:2, 720x576
Stream #0.1(eng): Audio: pcm_s16be, 48000 Hz, stereo, 1536 kb/s
Codec type mismatch for mapping #0.1 -> #0.0

Thanks for the suggestion though

[Case]

Did you try with and without 'Invert mapping'?

[Ian J Richards]

Originallt donw with invert mapping selected.

If I do not select invert mapping then the process fails, see log below

Encoding started on Mon Nov 5 21:05:04 GMT 2007
FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/ian/Desktop/BAA Academy-job environment new gfx-Uncompressed 8-bit PAL deinterlaced.mov':
Duration: 00:02:03.8, start: 0.000000, bitrate: 167428 kb/s
Stream #0.0(eng), 25.00 fps(r): Video: Uncompressed 8-bit 4:2:2, 720x576
Stream #0.1(eng): Audio: pcm_s16be, 48000 Hz, stereo, 1536 kb/s
Output #0, flv, to '/Users/ian/Desktop/BAA Academy-job environment new gfx-Uncompressed 8-bit PAL deinterlaced.mov.ff.flv':
Stream #0.0, 12.00 fps(c): Video: flv, yuv420p, 320x240, q=2-15, 200 kb/s
Stream #0.1: Audio: mp3, 22050 Hz, stereo, 56 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Unsupported codec (id=0) for input stream #0.0

[Case]

If Decode with QT still produces the "Unsupported codec"-error, then "Uncompressed 8-bit 4:2:2" isn't the right codec for this workflow.

I got working results with the supposedly lossless "Animation" codec, tho'.
I don't have Compressor, so can't do tests with this "Uncompressed 8-bit 4:2:2" you speak of.

[Ian J Richards]

Thanks.

Do you know of a high quality codec I can use that will produce crisp FLV's?

If I use a DV based codec the FLV looks soft, the colours loose thier punch, and there are very obvious compression artifacts. I think this is becase the DV based quicktime exported from FCP is not as good as the uncompressed 4:2:2.

Have you had a look at my other post re: strange colours on an AVI based FLV?

Any ideas on that?