mjpeg proxies

[farid abdelnour]

So I found a fix:


Create a profile and name it MJPEG


Add this line:

-vf scale=1024:-1 -q:v 3 -q:a 128k -vcodec mjpeg -acodec pcm_s16le


Maybe a good alternative is to store it in an MKV instead of a MOV. From
the quick test i did it worked really well!




2017-11-25 19:03 GMT-02:00 farid abdelnour <snd.noise at gmail.com>:

> hi
>
> so at the last café we discussed testing new profiles for creating proxies
> which are frame accurate for seeking.
>
> i am testing this line which vpinon shared:
>
>
> -vf scale=1024:-1 -qscale 3 -ab 128k -vcodec mjpeg -acodec pcm_s16le
>
> but i get an error:
> ==============================================================
>
> ffmpeg version 3.3.4 Copyright (c) 2000-2017 the FFmpeg developers
>
> built with gcc 7.2.0 (GCC)
>
> configuration: --prefix=/usr --disable-debug --disable-static
> --disable-stripping --enable-avisynth --enable-avresample
> --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl
> --enable-ladspa --enable-libass --enable-libbluray --enable-libfreetype
> --enable-libfribidi --enable-libgsm --enable-libiec61883
> --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb
> --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus
> --enable-libpulse --enable-libschroedinger --enable-libsoxr
> --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2
> --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp
> --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid
> --enable-shared --enable-version3
>
> libavutil 55. 58.100 / 55. 58.100
>
> libavcodec 57. 89.100 / 57. 89.100
>
> libavformat 57. 71.100 / 57. 71.100
>
> libavdevice 57. 6.100 / 57. 6.100
>
> libavfilter 6. 82.100 / 6. 82.100
>
> libavresample 3. 5. 0 / 3. 5. 0
>
> libswscale 4. 6.100 / 4. 6.100
>
> libswresample 2. 7.100 / 2. 7.100
>
> libpostproc 54. 5.100 / 54. 5.100
>
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/farid/Gunga/Juvelinas/
> Render/Alvenaria.mp4':
>
> Metadata:
>
> major_brand : isom
>
> minor_version : 512
>
> compatible_brands: isomiso2avc1mp41
>
> encoder : Lavf57.71.100
>
> Duration: 00:01:23.65, start: 0.000000, bitrate: 13459 kb/s
>
> Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv,
> bt709/unknown/bt709), 1920x1080 [SAR 1:1 DAR 16:9], 13266 kb/s, 23.98 fps,
> 23.98 tbr, 24k tbn, 47.95 tbc (default)
>
> Metadata:
>
> handler_name : VideoHandler
>
> Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
> fltp, 191 kb/s (default)
>
> Metadata:
>
> handler_name : SoundHandler
>
> Please use -q:a or -q:v, -qscale is ambiguous
>
> [NULL @ 0x55e271813420] Unable to find a suitable output format for
> '/home/farid/.cache/kdenlive/proxy/3c319b73214ec001cef8e184020f0062.mov
>
> '
>
> /home/farid/.cache/kdenlive/proxy/3c319b73214ec001cef8e184020f0062.mov
>
> : Invalid argument
>
> =======================================================
>
>
> also, any one interested in helping to test this?
>
>
>
>
> --
> 1111.1010.r.i.1101|n.o.i.s.1110|i.m.1010.g.1110|مقاومة
> fsf member #5439
> usuario GNU/Linux #471966
> |_|0|_|
> |_|_|0|
> |0|0|0|
> <a href="http://www.gunga.com.br">gunga</a>
> <a href="http://www.tempoecoarte.com.br">tempoecoarte</a>
> <a href="http://www.atelier-labs.org">atelier-labs</a>
> <a href="http://www.mocambos.net">rede mocambos</a>
>



-- 
1111.1010.r.i.1101|n.o.i.s.1110|i.m.1010.g.1110|مقاومة
fsf member #5439
usuario GNU/Linux #471966
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<a href="http://www.gunga.com.br">gunga</a>
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