[FFmpeg-user] ffmpeg & MPEG-2 GOP structure

[tim nicholson]

On 09/01/15 15:30, Valentin NOEL wrote:
> 2015-01-09 15:29 GMT+01:00 tim nicholson <nichot20-at-yahoo.com at ffmpeg.org>:
> 
>> [...]
>> It means that I was making a pragmatic suggestion for something you
>> could try immediately to solve your issue, rather than trying to get
>> bogged down in technical details too early.
>>
> 
> Actually, I need to add this flag "+cgop" because I need to generate closed
> GOP.
> Other encoders allow finishing closed GOP with B-frames (with only backward
> reference), so I wonder whether FFmpeg cannot allow doing this, or whether
> I do not use it correctly.
> 

Well does toggling that option off change things at all?
(Notwithstanding that for real use you need it, just trying to see what
might affect the result as I know chaging this can affect the bframe count).

-b_strategy  0 is the default so that setting should be doing nothing,
have you experimented with different values?

> 
>>> Thanks.
>>>
>>>[....]


-- 
Tim.
Key Fingerprint 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83