Ffmpeg Mp2 Audio Bitrate | Audio-Digital.net

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ffmpeg keeps converting second ac3 audio stream to mp2 ...

https://stackoverflow.com/questions/8670068/ffmpeg-keeps-converting-second-ac3-audio-stream-to-mp2#:~:text=ffmpeg%20does%20its%20work%2C%20except%20for%20the%20fact,%230.2%3A%20Audio%3A%20ac3%2C%2048000%20Hz%2C%20stereo%2C%20128%20kb%2Fs%27%3A

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#3918 (Bitrate incorrectly detected when decoding mp2 ...

https://trac.ffmpeg.org/ticket/3918

6.100 libswresample 0. 19.100 / 0. 19.100 [mp3 @ 0x2c41020] Estimating duration from bitrate, this may be inaccurate Input #0, mp3, from '/home/user/out.mp2': Duration: 00:04:55.00, start: 0.000000, bitrate: 381 kb/s Stream #0:0: Audio: mp2, 44100 Hz, stereo, s16p, 381 kb/s

video - ffmpeg conversion to mpeg2video - Stack Overflow

https://stackoverflow.com/questions/20078604/ffmpeg-conversion-to-mpeg2video

ffmpeg -i input -codec:v mpeg2video -qscale:v 2 -codec:a mp2 -b:a 192k output.mpg. Control quantizer scale with -qscale:v. Effective range for mpeg2video is a linear scale of 2-31 where 2 is the highest quality. Or you could use -b:v instead if you want to declare a specific bitrate.

Real-time MPEG-2 encoding with ffmpeg - smorgasbork

http://www.smorgasbork.com/2009/12/03/real-time-mpeg-2-encoding-with-ffmpeg/

2.5 Mbps with tolerance of 300k; the mpeg2video codec requires that the tolerance be “large enough” for the bitrate (so you can’t set a 10k tolerance on a 3Mbps bitrate, for example); a larger tolerance had some effect on video quality, but nothing near the -bf 2 effect. Audio options. Now a look at the audio options:

FFmpeg Codecs Documentation

https://ffmpeg.org/ffmpeg-codecs.html

Options may be set by specifying -option value in the FFmpeg tools, or by setting the value explicitly in the AVCodecContext options or using the libavutil/opt.h API for programmatic use. The list of supported options follow: b integer (encoding,audio,video) Set bitrate in bits/s. Default value is 200K. ab integer (encoding,audio)

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