[FFmpeg-user] 422 to 444 Upsampling Testbed
Paul B Mahol
onemda at gmail.com
Mon Apr 29 09:58:26 CEST 2013
On 4/28/13, Vincent Olivier <vincent at up4.com> wrote:
> On 2013-04-28, at 4:48 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
>> Vincent Olivier <vincent <at> up4.com> writes:
>>> - the composite YUV image (in RGB)
>> This sounds like a contradiction.
> It only "sounds" so because I (reasonably) assumed that you would have known
> I meant the reference PNG RGB converted from the 422 source (what one would
> get with a "default" 422 to RGB PNG conversion command).
>>> - the Y luma (grayscale)
>>> - the U chroma (grayscale)
>>> - the V chroma (grayscale)
>>> I found the "Fancy Filtering Examples" in the wiki
>>> and I tried to adapt the example to my needs but:
>>> 1) couldn't get the separate files: "Could not get
>>> frame filename number 2 from pattern 'y.png'
>> Please always provide your failing command line
>> together with complete, uncut console output.
> pc1:~ vincent$ ffmpeg -i
> -vframes 1 yuv.png y.png u.png v.png
Splitting yuv into planes of gray is supported for rawvideo codec only.
Filter could be added that export single or all planes into gray image(s).
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