The audio track cannot be recognized correctly.

[WoKee]

Version

Media3 1.8.0

More version details

No response

Devices that reproduce the issue

All

Devices that do not reproduce the issue

No response

Reproducible in the demo app?

Yes

Reproduction steps

potplay info :

media3 error log：

media3_1755657107412.log

Expected result

success

Actual result

fail

Media

file link:

https://drive.google.com/file/d/1jzCG6ujsUpmaNjbv6R5ixTq9RW2eRWwz/view?usp=sharing

Bug Report

• You will email the zip file produced by adb bugreport to android-media-github@google.com after filing this issue.

[icbaker]

mediainfo cannot find the audio track either (and reports a conformance error), suggesting this file is corrupted:

$ mediainfo no_audio.flv
General
Complete name                            : no_audio.flv
Format                                   : Flash Video
File size                                : 35.5 MiB
Duration                                 : 3 h 19 min
Overall bit rate                         : 24.9 kb/s
Frame rate                               : 30.000 FPS
Writing application                      : Gamestreaming v2.0
_link_info                               : n.cn-5akwt0.ksqt_1822019,n.cn-5akwt0.6yi5_1491184,n.cn-l72a5u.9zdt_1752791,n.cn-l72a5u.0x1m_2270090
_stream_id                               : tx.flv.huya.com:huyalive:1199542849820-1199542849820-5355713562574585856-2399085823096-10057-A-0-1_264-4000
Conformance errors                       : 1
 0x9                                     : Yes
  General compliance                     : Element size 2528 is more than maximal permitted size 479 (offset 0x237BB10)

Video
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : Main@L4
Format settings                          : CABAC / 2 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 2 frames
Format settings, GOP                     : M=1, N=60
Codec ID                                 : 7
Duration                                 : 3 h 19 min
Bit rate                                 : 3 000 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 30.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.048
Stream size                              : 4.18 GiB

[WoKee]

Thanks for replying.This is a live stream. When using Media3 for decoding, there is no audio track detected. However, Ijkplayer can recognize the audio track, which is in AAC format.

Therefore, I downloaded a clip from the stream for testing, and it might also be the reason for the prompt indicating the file is corrupted.

This clip can be played with PotPlayer. The player can recognize the audio track information and play the audio normally, which matches the information shown in the image above.

This is ijkplayer :

[WoKee]

I just tested with the official VLC app, and it can decode the audio track normally. The information is as follows:

[icbaker]

I continue to believe the provided file is invalid.

I am unable to comment on the validity of the livestream as it has not been provided.

[WoKee]

I continue to believe the provided file is invalid.

I am unable to comment on the validity of the livestream as it has not been provided.

I can provide the live stream URL, but the link has an expiration date. If you can maintain prompt communication in your next reply, I will share the live stream URL with you.

[icbaker]

I'm afraid we are unable to commit to investigating issues with a deadline like that - please produce a stream that reproduces the issue without such an expiration.