On 13-02-2019 10:32 PM, Harvey Pikelberger wrote:
I've got a bunch of 4- and 5-audio-track ProRes sources.
I want to create h.264/mp4 proxies of each, matching the source audio assigns
The FFmpeg code I'm using is tripping up over time code and codec issues.
Here's the code:
-i '/Path/To/ProRes/Source.mov' -map 0 -g 48 -c:v libx264 -profile:v baseline
-crf 16 -c:a aac -b:a 256k -vf scale=1280:720 -pix_fmt yuv420p
'/Path/To/Mp4/Dest.mp4'
As I understand -map 0 is what conforms the audio assigns.
Not sure what -g 48 is doing, but removing still gets errors.
Here are the errors:
[mp4 @ 0x7fe633006000] You requested a copy of the original timecode track so
timecode metadata are now ignored
[mp4 @ 0x7fe633006000] Could not find tag for codec none in stream #2, codec
not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?):
Invalid argument
Error initializing output stream 0:1 --
[aac @ 0x7fe633801e00] Qavg: nan
Conversion failed!
`-map 0` maps all streams for output including those that the output may
not be able to handle, like the single-packet timecode stream. However,
ffmpeg will copy it using the metadata entry created when reading the input.
So, unmap the data streams,
-i '/Path/To/ProRes/Source.mov' -map 0 0 -map -0:d -g 48 -c:v
libx264 -profile:v baseline -crf 16 -c:a aac -b:a 256k -vf
scale=1280:720 -pix_fmt yuv420p '/Path/To/Mp4/Dest.mp4'
Gyan
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