[FFmpeg-user] mpeg4 better than libx264?
h.reindl at thelounge.net
Fri Jan 13 15:15:45 CET 2012
Am 13.01.2012 09:07, schrieb dE .:
>> Yes, you are missing something. The fact that you have asked for a bitrate of 20 megabits for a tiny, tiny video
>> (320x148). The encoders tried their damn hardest to achieve it by using the lowest quantisers they could but
>> ultimately failed.
>> As for the results, you will see that x264 was allowed to output more bits. A quick bit of math shows that x264
>> would have a similar file size if it had equivalently limited as mpeg4.
> I did that to ensure no quality loss, but when I capped the bitrate to 200k, I got very less quality loss as
> compared to the 20000k one (it's actual bitrate was 600k)
so set it to a human bitrate NOT lower than the input-file and
not to idiotic bitrates with some MEGABIT before considering
what 20 MBit PER SECOND does mean
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