[FFmpeg-user] convert YV12 stream to ProRes

[Christoph Gerstbauer]

can you provide a screenshot of source and prores output?

bg Chris

Am 16.06.2014 22:43, schrieb Roee Kashi:
> of course, and it works but the output is more red then the original
> because the U and V are opposite probably.
>
>
> 2014-06-16 22:48 GMT+03:00 Christoph Gerstbauer <
> christophgerstbauer at gmail.com>:
>
>> Did you try it without the -vtag option?
>>
>> (ProRes is alsways 10bit 4:2:2)
>>
>> bg chris
>>
>>
>> Am 16.06.14 21:21, schrieb Roee Kashi:
>>
>>> Hi,
>>>
>>> I'm decoding an IP camera stream which outputs YV12 frames.
>>> using named pipes, I pass this stream to ffmpeg (Zeranoe build version
>>> 2014-06-15) and wish to convert it to ProRes format.
>>> I tried the following command:
>>>
>>>> ffmpeg.exe -y -f rawvideo -vcodec rawvideo -s 352x288 -r 25 -pix_fmt
>>>>
>>> yuv420p -i \\.\pipe\yv12Pipe -vcodec prores -qp 0 -vtag YV12
>>> d:\\out123.mov
>>>
>>> when i convert it to AVI it works ok, but for ProRes it doesn't and it's
>>> probably because the vtag YV12 cannot be applied on ProRes which defines
>>> its pixel format.
>>>
>>> what i'm seeking is an additional input pix_fmt for YV12 (or perhaps
>>> yvu420p?).
>>>
>>> When I tried to do that in 2 steps (convert it to AVI then to ProRes) it
>>> works, terribly slow - but works.
>>> here is the output of this process:
>>>
>>>   ffmpeg -i "d:\out123.avi" -vcodec prores d:\out.mov
>>> ffmpeg version N-63968-g73d820e Copyright (c) 2000-2014 the FFmpeg
>>> developers
>>>     built on Jun 15 2014 00:52:21 with gcc 4.8.3 (GCC)
>>>     configuration: --enable-gpl --enable-version3 --disable-w32threads
>>> --enable-avisynth --enable-bzlib --enable-fontconfig --e
>>> tls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca
>>> --enable-libfreetype --enable-libgme --enable-libgsm -
>>> libmodplug --enable-libmp3lame --enable-libopencore-amrnb
>>> --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --
>>> ibschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
>>> --enable-libtwolame --enable-libvidstab --enable-libvo-a
>>> benc --enable-libvorbis --enable-libvpx --enable-libwavpack
>>> --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxa
>>> ble-decklink --enable-zlib
>>>     libavutil      52. 89.100 / 52. 89.100
>>>     libavcodec     55. 66.101 / 55. 66.101
>>>     libavformat    55. 43.100 / 55. 43.100
>>>     libavdevice    55. 13.101 / 55. 13.101
>>>     libavfilter     4.  8.100 /  4.  8.100
>>>     libswscale      2.  6.100 /  2.  6.100
>>>     libswresample   0. 19.100 /  0. 19.100
>>>     libpostproc    52.  3.100 / 52.  3.100
>>> Input #0, avi, from 'd:\out123.avi':
>>>     Metadata:
>>>       encoder         : Lavf55.21.102
>>>     Duration: 00:11:18.36, start: 0.000000, bitrate: 30417 kb/s
>>>       Stream #0:0: Video: rawvideo (YV12 / 0x32315659), yuv420p, 352x288,
>>> 30414 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
>>> [prores @ 0000000000315d40] encoding with ProRes standard (apcn) profile
>>> [prores @ 000000000034f680] encoding with ProRes standard (apcn) profile
>>> [prores @ 0000000000354ce0] encoding with ProRes standard (apcn) profile
>>> [prores @ 0000000000357f60] encoding with ProRes standard (apcn) profile
>>> [prores @ 00000000003001a0] encoding with ProRes standard (apcn) profile
>>> Output #0, mov, to 'd:\out.mov':
>>>     Metadata:
>>>       encoder         : Lavf55.43.100
>>>       Stream #0:0: Video: prores (apcn) (apcn / 0x6E637061), yuv422p10le,
>>> 352x288, q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc
>>>       Metadata:
>>>         encoder         : Lavc55.66.101 prores
>>> Stream mapping:
>>>     Stream #0:0 -> #0:0 (rawvideo (native) -> prores (prores))
>>> Press [q] to stop, [?] for help
>>> frame=16959 fps=220 q=0.0 Lsize=  606784kB time=00:11:18.36
>>> bitrate=7327.6kbits/s
>>> video:606713kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
>>> muxing overhead: 0.011810%
>>>
>>> So I believe there should be a way to do improve it with a single
>>> operation.
>>>
>>> Regards,
>>> Roee.
>>> _______________________________________________
>>> ffmpeg-user mailing list
>>> ffmpeg-user at ffmpeg.org
>>> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>>>
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