IIna plays all movie.mkv files only with a trick about iina

[low-batt]

Did not reproduce for me.

I dragged a .mkv file to IINA's window and it opened the file and started playback.

IINA's General settings contains the setting When media is opened that can be set to pause playback at the start. But when that setting is enabled clicking on the play button will start playback. So this setting can't explain the reported behavior.

Lets see if the log files provide any sort of indication as to what is going wrong.

To enable logging follow these instructions:

• Start IINA
• Click on Settings… under the IINA menu
• The settings panel appears
• On the left side of the panel click on Advanced
• Slide the Enable advanced settings toggle button to be on (blue)
• Click on the checkbox Enable logging to file
• Confirm the settings panel looks like the screenshot below
• Restart IINA to activate logging

Once IINA has restarted, reproduce the problem. Then:

• Click on Settings… under the IINA menu
• The settings panel appears
• On the left side of the panel click on Advanced
• Click on Open log directory
• A new Finder window appears containing the logs for this session
• Quit IINA to complete the log files

The Finder window contains two files, iina.log and mpv.log. To attach the log files to this issue, drag-n-drop them from the Finder window to the Leave a comment section below. Include both the iina.log and the mpv.log

The log files can also be accessed using Terminal as shown here:

low-batt@gag com.colliderli.iina$ pwd
/Users/low-batt/Library/Logs/com.colliderli.iina
low-batt@gag com.colliderli.iina$ ls
2022-10-04-17-57-15_jVrbWy
low-batt@gag com.colliderli.iina$ cd 2022-10-04-17-57-15_jVrbWy
low-batt@gag 2022-10-04-17-57-15_jVrbWy$ ls
iina.log	mpv.log
low-batt@gag 2022-10-04-17-57-15_jVrbWy$ 

With logging enabled IINA creates a new log directory each time it is started. If accessing the logs using Terminal be sure to obtain them from the latest log directory.

DO NOT FORGET to disable logging once you have obtained log files for the problem being investigated. IINA does not restrict the size of log files or delete old logs. If you leave logging enabled the logs will continue to accumulate.