[FFmpeg-user] ffprobe -show_frames values

Christian Ebert blacktrash at gmx.net
Tue May 12 15:45:14 CEST 2015

* Werner Robitza on Tuesday, May 12, 2015 at 15:10:07 +0200
> On Tue, May 12, 2015 at 2:45 PM, Christian Ebert <blacktrash at gmx.net> wrote:
>> * Nicolas George on Tuesday, May 05, 2015 at 17:28:33 +0200
>>> As an additional note, the second solution if by far preferable, because
>>> forcing the frame type too frequently ruins x264's bit allocation
>>> algorithms.
>> As per this thread elsewhere there are different opinions on
>> that. Others say that no-scenecut is not adviseable because it
>> obviously removes scene detection.
>> Which one is it then:
>> -force_key_frames
>> or
>> -x264opts keyint=xxx:no-scenecut
>> ?
>> Personally I got ok looking results both ways with various
>> material.
> I'm currently involved in ITU-T standardization of a quality model for
> adaptive streaming, and in our video sequences that we use for
> (subjective user) tests, we've disabled scene cut detection
> throughout, with good-looking results. Nothing unexpected.

Thanks for confirming. IIRC I had trouble with (some) older x264
versions and no-scenecut and had therefore worked with
-force_key_frames for a while. But I cannot reproduce the problem
with current x264, so I switched to x264opts with no-scenecut.

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