New answers tagged

0

Not every device supports every resolution or framerate, so those aspects are outside of H.264 encoding parameters. That said, a framerate of 30 fps or under, and a resolution of 480p or smaller should be safe for most devices currently in use. As for H.264 encoding, Baseline profile, and a level of 3.x is sufficient. You should only need to specify the ...


0

I followed up on the yuv420p(tv, bt709) portion of the encoding and discovered that this refers to the Rec. 709 colorspace for HDTV. In ffmpeg, colorspace is defined by the colormatrix filter. However, you must convert from some colorspace. According to an ffmpeg mailing list conversation, the default colorspace is assumed to be bt601: ISTR that if you ...


2

You can calculate the maximum total bit rate that would fill the storage: 30GB ≈ 30,720 MB ≈ 245,760 Mb 10 hours = 600 minutes = 36,000 seconds 245,760 / 36,000 ≈ 6.83 Mb/s You need to encode to a video bit rate less than that maximum to account for the audio and any overhead. Plus, you probably want to leave some space free on the storage. I'd say that ...


0

The scale filter resets the sample aspect ratio to match the original display aspect ratio. You should add setsar=1 after each scale. In any case, videos don't contain pixel count with fractional components, and FFmpeg won't output those. I'm not sure about DASH but I suppose the validator expects each variant to have the same exact aspect ratio. In your ...


0

FFMPEG of course. Being a command line application it can be easily integrate into any batch process no matter how convoluted, with the benefit that you get to learn about the power of the command line while you're at it (worked for me). I haven't explored h.265 encoding much yet, but using settings I stole from the ffmpeg wiki here's how you'd encode a ...


0

Run ffmpeg -analyzeduration 1G -probesize 100M -i s1.mp4 -c copy s1new.mp4 and test the new file.


0

In the end, I made it work just as posted above, by installing the Haali Media Splitter. I have seen posts by people who say that this software is needed to process MP4 files.


0

You'll have to use another source filter, such as FFMS2 or LSMASHSource



Top 50 recent answers are included