[FFmpeg-user] convert YV12 stream to ProRes

[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.
>> _______________________________________________
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>> ffmpeg-user at ffmpeg.org
>> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>>
>
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