On 2/26/2021 5:55 PM, Mark Filipak (ffmpeg) wrote:
The source video is a 5 second MKV clip from a commercial DVD.
Instead of using unknown data*, I suggest making your own test video so
you're absolutely sure of all the parameters. You could do this with the
ffmpeg testsrc or with something like Premier/FCP/etc. I'd also consider
different containers.
Example-
ffmpeg -f lavfi -i testsrc=duration=10:size=1280x720:rate=30 testsrc.mpg
(that's _probably_ going to be correct; wouldn't hurt to check with an mpeg
analyzer)
There may also be some test files you can download that can be trusted.
*Unless _known_ to be fully compliant and well-formed, it's not precision
test data; get as close to a primary standard as possible. I would not trust
an extract from a generic dvd until verified as correct.
Later,
z!
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