I am recording video clips and then joining all the clips in a final video.
Everything goes fine but the joining process takes too long.
Tried to using some ffmpeg filters from here:
https://trac.ffmpeg.org/wiki/Encode/H.264
And here is my ffmpeg command that I am using to increase the speed (which seems to be wrong):
command = new String[]{"-y",
"-f",
"concat",
"-safe",
"0",
"-i",
"/storage/emulated/0/DCIM/my_file.txt",
"-c:v",
"-preset",
"fast",
"-crf",
"22",
"copy",
"-flags",
"+global_header",
"/storage/emulated/0/DCIM/SampleApp/" + videoOutputPath
};
Please help! Thanks much.
Best Answer
Got the solution:
I missed some options as I am a newbie with ffmpeg:
Final command:
Where "-preset ultrafast is one option to increase the encoding speed, along with CRF 28".