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seen Aug 15 '13 at 22:25

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accepted Add a stream using ffmpeg without creating a new file
Jul
30
comment Add a stream using ffmpeg without creating a new file
Ah good. I didn't know you could map metadata like that. That will be very handy, although it is annoying that you can't just 'inject' a stream. You say that only works with muxers that support non-seekable output, and therefore not with MP4 so how can Subler do this with mp4s? When I add a subtitle stream to a mp4 using that it takes less than two seconds, so it cant be creating a whole new file and deleting the old...?
Jul
30
asked Add a stream using ffmpeg without creating a new file
Jul
30
comment How can I set a h.264 profile level with ffmpeg?
I just stumbled upon a way to achieve this. Subler actually has an option, when you select the video stream, to change the profile and level to make it compatible with certain devices. It tells you to make sure that the video is compatible wit the profile you are setting so I don't think it does any re-encoding, it must just change the metadata.
Jul
24
comment How can I set a h.264 profile level with ffmpeg?
I now have a different file with a similar problem. It is the wrong profile level but the rest of the specs seem to be compatible with my required level (4.0). If I use the commands you gave above, will it leave the data untouched unless it is incompatible with the entered profile level? Basically, I don't want ffmpeg to touch any of the data other than the tag that says what profile and level it is. Is that possible or is it going to set all of the values (nitrate, framerate etc) to preset values?
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14
comment How can I set a h.264 profile level with ffmpeg?
I think it might have just been the artwork that was lost. I don't know if that is technically considered metadata... Is the artwork actually contained within the file? I didn't check everything else before I added the whole to it again.
Mar
13
comment How can I set a h.264 profile level with ffmpeg?
That worked well. Unfortunately it lost some of the metadata but the actual video didn't have any noticeable change in quality. Out of interest, would the following command have achieved the same thing? ffmpeg -i input.mp4 -vcodec x264 -vprofile high -vlevel 4.0 -acodec copy output.mp4
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asked How can I set a h.264 profile level with ffmpeg?
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