[CinCV TNG] MPEG-2 native lossless editing without re-encoding

JCA 1.41421 at gmail.com
Thu Dec 29 17:08:51 CET 2016


OK, thanks; that's what I was looking for.

On Thu, Dec 29, 2016 at 8:32 AM, Einar R√ľnkaru <einarrunkaru at gmail.com>
wrote:

>
>
> On 12/29/2016 05:18 PM, JCA wrote:
>
>> While I defer to your expertise, which is no doubt far deeper than mine
>> (almost nonexistent, at any rate) the truth is that a simple google
>> search returns many links to tools (under Windows and Mac, never Linux,
>> and non-free, mostly) that, purportedly, get the job done, together with
>> comments from people who claim that it is by no means impossible, and
>> describe ways (clunky, apparently impractical, and probably dubious, to
>> be sure) to do it.
>>
>> Anyway, it is not my intent to start a war here; I would not have the
>> necessary minimum knowledge to wage it, anyway. I just want to tackle a
>> problem that is easily described: I have some x.264 video material that
>> I would like to edit with single-frame accuracy. Can this video be
>> processed (by Cinelerra, or some other tool) into a different format, so
>> that Cinelerra can do the editing? If I understand things correctly,
>> conceptually it would be a matter of uncompressing the x.264 video
>> (obtaining a much larger output video), work on the uncompressed video,
>> and then compress the resulting video material with x.264. Can this be
>> done, in a (relatively) simple way, without loss of quality, with the
>> help of Cinelerra?
>>
>>
> Overall answer is yes.
>
> If you want to use CV branch - this currently does not support x.264 - you
> have to reencode:
> http://www.g-raffa.eu/Cinelerra/HOWTO/get_media_ready.html
>
> GG afaik supports H.264 directly.
>
> Einar
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>
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