[FFmpeg-trac] #5388(avformat:new): Audio Stream Specifier Need to Change for MP2 & MP3
FFmpeg
trac at avcodec.org
Wed Mar 30 11:15:59 CEST 2016
#5388: Audio Stream Specifier Need to Change for MP2 & MP3
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Reporter: smallishzulu | Owner:
Type: defect | Status: new
Priority: normal | Component: avformat
Version: git-master | Resolution:
Keywords: mpegts | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by cehoyos):
Replying to [comment:4 smallishzulu]:
> ffmpeg -i input.ts -vcodec mpeg2video -vb 2500k -acodec mp2 -ab 128k
-muxrate 3000k -f mpegts output.ts
What is the audio input (and output) sample rate? If it is not below
32kHz, the audio in this stream is MPEG-1 audio.
> When you analyze the output with Dectek StreamXpert tool, it seems MPEG
1 Audio.
Which is correct: AV_CODEC_ID_MP2 is MPEG-1 Layer II Audio, see for
example https://en.wikipedia.org/wiki/MPEG-1_Audio_Layer_II
> However, codec is MP2.
The audio codec known as MP2 was defined in MPEG-1.
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Ticket URL: <https://trac.ffmpeg.org/ticket/5388#comment:5>
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