[FFmpeg-user] Converting to h.265, keeping all audio streams

Henk D. Schoneveld belcampo at zonnet.nl
Fri Jan 9 13:37:45 CET 2015

On 09 Jan 2015, at 10:25, cvb at kruemel.org wrote:

>>> Sorry, I don't get the question. Does that sound a stupid idea?
>> If you want to compare then you should use the same, original source for
>> each encoder. As far as I can tell you're making your H.265 video from
>> your H.264 video which introduces another lossy generation and makes any
>> comparisons inherently flawed.
> Yes, I understand that. Unfortunately, these are TV recordings which I only have in h.264, because they are broadcasted this way. So I guess the best I can do is to convert those into h.265 and see if I notice any drops in quality.
> Is there, by the way, any option to see from an h.264 movie to see which settings (CRF, preset, etc.) were used originally to create it (e.g. by the TV station)?
Probably not CRF and preset because they are x264 specific, you can however see the bitrate, fps and gop-size.
> Thanks again, Chris
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