On 06/28/2008 01:59 PM, Pol Hallen wrote:
What's improve? Only the file size or also the quality?
IMHO the quality of the original FLV is the same as my converted AVI. So I only need to improve file size
Sure! U do the coding at 1000kb/s I remember that flv files (from youtube) are about 550Kb/s
try: ffmpeg -i file.flv to view the code
thank you. Really good input! Most clips even have much lower bitrate $ ffmpeg -i example.flv [...] Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 29.92 (359/12) Input #0, flv, from 'example.flv': Duration: 00:01:03.5, start: 0.000000, bitrate: 56 kb/s Stream #0.0: Video: flv, yuv420p, 320x240, 29.92 fps(r) Stream #0.1: Audio: mp3, 22050 Hz, mono, 56 kb/s Must supply at least one output file
and try something like: ffmpeg -i source.flv -b 500k -vcodec mpeg4 -vtag divx -acodec mp3 -ar 8000k -ab 64k destination.aviand check size/quality
$ ffmpeg -i example.flv -b 500k -vcodec mpeg4 -vtag divx -acodec mp3 -ar 8000k -ab 64k example.avi $ du -sh example.* 4.4M example.avi 2.5M example.flv With the size I am happy. But the quality is much worse (often it is jumping to the next frame)
Consider: are your file done for internet stream or local stream? and choose what you prefer :-)
Not for streaming. Just let other users downloading and archiving. cheers Simon
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