[FFmpeg-user] Convert to: Apple PRO RES 422 (HQ)
WPoll at nhnz.tv
Mon Dec 25 21:19:08 EET 2017
On 24/12/2017, at 03:09, saeed vayghani <saeed.uni68-at-yahoo.com at ffmpeg.org<mailto:saeed.uni68-at-yahoo.com at ffmpeg.org>> wrote:
Our problem is about to converting videos to apple quick time format.
The difficult part is matching output with apple recommended specification.
Please help us to find what switches should we use?
This is my draft command:
ffmpeg -i input.mp4 -c:v prores -profile:v 2 -vf scale=1920x1080 -codec:a pcm_s16le -b:a 1536k output.mov
Should be -c:v prores -profile:v 3 for Apple ProRes 422 (HQ)
Apple recommended specification.
File Format :
QuickTime (.mov files)
Apple PRO RES 422 (HQ)
Video Bitrate :
24 or 25 fps
Pixel ratio :
Ratio must be 1:1 (square pixel)
The video must not be interlaced
Black frame begin/end :
The video must contain one black frame at the beginning and at the end
Black bar scopes and logos :
No logo will be accepted
Black bars accepted but we need crop size information (in pixels) :
* crop left: The number of whole pixels from the left of the encoded image to remove.
* crop top: The number of whole pixels from the top of the encoded image to remove.
* crop right: The number of whole pixels from the right of the encoded image to remove.
* crop bottom: The number of whole pixels from the bottom of the encoded image to remove.
Sound Quality :
Codec : PCM
Sampling frequency : 48 kHz
Sample size : 16 bits
Audio bitrate : ~1536 kb/s
Channels : 2 (stereo)
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