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Revision d62bf5d4

IDd62bf5d4e73250295c0a652e151498c5b19cbd63
Parent c34cb130
Child 173c975e

Added by Peter Belkner about 10 years ago

mp3enc: mux a XING header

The patch below provides exactly that to the MP3 muxer. A XING header
containing

  • the numer of frames,
  • the size, and
  • a TOC

is generated.

It's based on an idea by Anton Khirnov (restricted to the number of
frames) found at

http://patches.ffmpeg.org/patch/1891/

The TOC is generated as found in lame's "VbrTag.c".

According to my tests the following reproduces the number of frames, the
size and the TOC in "c.mp3" from "b.mp3" (except a shift due to shorter
XING header generated by FFmpeg):

lame -V2 a.wav b.mp3
   ffmpeg -i b.mp3 -acodec copy -y c.mp3

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