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Feature #791

MP4 (.m4v) support

Added by Brian Zech about 6 years ago. Updated about 6 years ago.

Status:
Closed
Priority:
Minor
Assignee:
-
Category:
plugins/ffaudio
Target version:
3.10
Start date:
April 23, 2018
Due date:
% Done:

100%

Estimated time:
Affects version:

Description

While in Audacious, I am unable to open and play a MP4 (m4v) file. But, if I rename it to m4a for example, I can play it just fine. Is it possible to add this functionality, where Audacious will look at the audio of the MP4 and play it vs rejecting?

screenshot.png (32.3 KB) screenshot.png Error message displayed Brian Zech, April 24, 2018 00:21
audacious.txt (24.8 KB) audacious.txt audacious -V Brian Zech, April 24, 2018 00:22

History

#1 Updated by John Lindgren about 6 years ago

It should already work. I can play the audio of .mp4 video files fine here.

Please provide the following information:
- Version of Audacious
- Version of FFmpeg
- Operating system and version
- Any error message displayed

Also please attach (as a separate file, don't copy and paste it) the output of "audacious -V".

#2 Updated by Brian Zech about 6 years ago

Audacious 3.9
ffmpeg version 3.4.2
Ubuntu 18.04 MATE
Error message displayed - see attached.
Audacious terminal output - see attached.

I assume you meant for me to run Audacious and attempt playback of said file(s) whilst Audacious is executed under "audacious -V", so my output provided will show that.

Please note that playing the exact video file here via ffplay from terminal works without problems. I also have no issues with playback via VLC with the specific file used here. This problem is also not just with this specific file, but all video files I tried in testing.

#3 Updated by John Lindgren about 6 years ago

This is probably related:

WARNING ffaudio-core.cc:186 [m4v]: <0x7f68dc0bc640> Stream #0: not enough frames to estimate rate; consider increasing probesize
INFO ffaudio-core.cc:186 [m4v]: <0x7f68dc0bc640> decoding for stream 0 failed
WARNING ffaudio-core.cc:186 [m4v]: <0x7f68dc0bc640> Could not find codec parameters for stream 0 (Video: mpeg4, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options

We have a 16 KiB probing limit in place, which is fine for audio but might not be large enough for high-resolution video. I hesitate to increase this limit since it could have a negative impact on people playing internet streams.

Now that I closer look at your post, I see that your files have a .m4v extension, which is not explicitly whitelisted for the ffaudio plugin. The one I tested was .mp4, which is whitelisted. So adding .m4v to the whitelist seems like the simplest fix.

#4 Updated by John Lindgren about 6 years ago

  • % Done changed from 0 to 100
  • Target version set to 3.10
  • Status changed from New to Closed
  • Category set to plugins/ffaudio
  • Subject changed from MP4 support to MP4 (.m4v) support

#5 Updated by Brian Zech about 6 years ago

We have a 16 KiB probing limit in place, which is fine for audio but might not be large enough for high-resolution video. I hesitate to increase this limit since it could have a negative impact on people playing internet streams.

Just for reference purpose, the video is 640x384 and 3 minutes 30 seconds in duration.

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