[FFmpeg-user] Modify FFMP Vendor FourCC for ProRes Videostream

Marcel Hinsch marcel.hinsch at kdg.at
Wed May 19 12:48:58 EEST 2021


Looking into FFMPEG's source when trying to figure out how to change a 
ProRes Video Stream's vendor tag (which is required for certain automated 
spec compliency tests), I have found that the vendor code is hard-coded to 
"FFMP" as visible on this line of code: 
. Being hardcoded, it doesn't seem like it can be changed unless the 
source is forked. Is there a reason this is set to "FFMP"? Would there be 
an issue changing it to "appl"? Why was a different value from "appl" 
chosen in the first place?


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