mp3 file play fail

[tiejun.peng]

Summary of the bug: probe and play fail
How to reproduce:

./ffplay ~/音乐/music_mp3 
./ffprobe ~/音乐/music_mp3 
ffmpeg version
ffmpeg version N-89306-g5bea410 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  configuration: --prefix=/usr/local/ffmpeg --samples=fate-suite/ --disable-yasm --enable-ffplay --disable-ffserver --toolchain=gcov --toolchain=valgrind-memcheck
  libavutil      56.  3.100 / 56.  3.100
  libavcodec     58.  6.101 / 58.  6.101
  libavformat    58.  2.103 / 58.  2.103
  libavdevice    58.  0.100 / 58.  0.100
  libavfilter     7.  5.100 /  7.  5.100
  libswscale      5.  0.101 /  5.  0.101
  libswresample   3.  0.101 /  3.  0.101

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

[tiejun.peng]

mp3 music file probe and play fail

[tiejun.peng]

The file can play success with VLC and probe success with mediainfo

[cehoyos]

Replying to tiejun.peng:

The file can play success with VLC

Are you sure?
Playback sounds very, very bad here, as if the file were heavily damaged.

If there is an issue, it is a regression since a8bc175dd9cec09c1cbdc6e5e3bf8f59170162da.

[tiejun.peng]

Replying to cehoyos:

Replying to tiejun.peng:

The file can play success with VLC

Are you sure?
Playback sounds very, very bad here, as if the file were heavily damaged.

If there is an issue, it is a regression since a8bc175dd9cec09c1cbdc6e5e3bf8f59170162da.

Yes,i'm sure. Playback sounds good with VLC media player 2.2.2 Weatherwax (revision 2.2.2-0-g6259d80).But playback sounds all noise with ffmpeg(git-master/3.4)

[cehoyos]

If playback sounds all noise, why is it such a good idea to allow auto-detecting the file as mp3?

[tiejun.peng]

The ffmpeg have two problems:mp3 container probe and decode. I have fixed the probe bug by myself and using other decode (not ffmpeg's avcode)can play ok now. I just think ffmpeg should fix the bug also.

[cehoyos]

Could you test your original sample with mpeg123 from ​https://www.mpg123.de?
I don't think your sample is valid, and while I did listen to contemporary music, I don't think this counts as music when played with vlc.

[tiejun.peng]

The mpg123 sounds bad as ffmpeg master.
Just need download and install the VLC from ​http://www.videolan.org,
you will find the truth that the file is music not noise.

[cehoyos]

That was not my point:
Both madplay and mpg123 show a large number of decoding errors, don't you agree that this indicates the source file is invalid?

[tiejun.peng]

Replying to cehoyos:

That was not my point:
Both madplay and mpg123 show a large number of decoding errors, don't you agree that this indicates the source file is invalid?

I think the mp3 file is good! It can be play pefectly by VLC and Stagefright(Android platform) . Try to play with VLC, you can find the truth in a few minutes. it is chance to improve the mp3 decoder of ffmpeg.

[cehoyos]

Replying to tiejun.peng:

I think the mp3 file is good! It can be play pefectly by VLC and Stagefright(Android platform).

Try to play with VLC, you can find the truth in a few minutes. it is chance to improve the mp3 decoder of ffmpeg.

When you play the file music_mp3 with vlc, it sounds different from the file vlc-record-2017-12-09-01h02m32s-music_mp3-.mp3​you attached here?