Stas Oskin wrote:
> Hi again.
>
> After checking the matter some more, I have an important question
> which might to resolve this issue:
>
> Is it true that in MP4 format (and all other stream-able formats)
note that MP4 is not really a streamable format (when a .mp4 file
is streamed, the streamer demuxes it and only sends the audio and
video elementary streams).
> specified frame rate is secondary, and the main parameter FFMPEG uses
> is the frames timestamps?
Not sure about what you are asking... It might happen that in some
broken files the MP4 headers contain wrong information about the frame
rate, but I do not know how frequent/probable this is.
Another possibility is a file containing video with a variable frame
rate (but I do not know if this is supported by mov/mp4).
> Meaning, the frame can be whichever was set, but the actual streaming
> + playback would be controlled by the frames timestamps?
If the file is not broken, the timestamps must be consistent with the
declared frame rate.
Luca
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