[FFmpeg-devel] [bug/patch] MPEG-TS muxer: PCR not in sync withPTS/DTS

belcampo belcampo
Mon Oct 19 10:46:12 CEST 2009

Niobos wrote:
> On 16 Oct 2009, at 16:56, belcampo wrote:
>> After applying the patch, ffmpeg-mpegts-vbr-4.diff, doing
>> ffmpeg -i 86240frames-h264.ts -an -vcodec copy -f rawvideo 
>> 86240frames.h264  produces the raw frames where last line is:
>> frame=172480 fps=2285 q=-1.0 Lsize= 3996695kB time=3449.58 
>> bitrate=9491.3kbits/s
>> Notice frame vs. field problem.
>> ffmpeg -i 86240frames.h264 -an -vcodec copy -f mpegts new.ts
>> now produces
>> frame=172480 fps=1393 q=-1.0 Lsize= 7371403kB time=3449.62 
>> bitrate=17505.3kbits/s
>> Notice size/bitrate increase
> Is this a pure cosmetic problem? or is there a difference in the output 
> file?
No it's NOT cosmetic only. File-size, also in the real world, grows from 
Lsize= 3996695kB to
Lsize= 7371403kB
> I'm not a specialist at this, but I don't think this has anything to do 
> with the MPEG-TS muxer... From how I understand the code, the muxer is 
> simply handed a series of bytes to store.
> Greets,
> Niobos_______________________________________________
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