#10946 closed defect (invalid)
Broken pause/resume in ffmpeg version 7.0.0
| Reported by: | ddhschmidt | Owned by: | |
|---|---|---|---|
| Priority: | important | Component: | ffmpeg |
| Version: | git-master | Keywords: | ffmpeg command pause |
| Cc: | ddhschmidt | Blocked By: | |
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | no |
Description
After updating to the latest release (7.0.0) I noticed I could still "pause" the ffmpeg tool by clicking into the command line window or hitting "break" on the keyboard while focusing the command line window.
The output indeed stops and no encoding takes place.
The cpu usage doesn't go down though. Task Manager shows ffmpeg.exe is still using as much cycles as if the encoding hadn't stopped at all.
I am on Windows (x64) and test with the builds from Gyan (https://www.gyan.dev/ffmpeg/builds/)
The earliest master build available on that page was from 2024-02-15 and it exhibits the same problem.
Going back to the previous release build (6.1.1) enables me to correctly pause the encoding process again and ffmpeg.exe doesn't consume any cpu cycles anymore.
Change History (4)
comment:1 by , 6 weeks ago
| Priority: | minor → important |
|---|---|
| Reproduced by developer: | set |
| Status: | new → open |
comment:2 by , 6 weeks ago
| Resolution: | → invalid |
|---|---|
| Status: | open → closed |
I am not aware of this ever having been an intended or documented feature.
comment:3 by , 6 weeks ago
I don't remember where I've found this. Most probably it's not from the official documentation:
The first ctrl-c interrupts the transcoding process and starts flushing.
The second ctrl-c interrupts the flushing itself.
Three ctrl-c in a row interrupts everything immediately.
comment:4 by , 6 weeks ago
Pause resume are done by the Ctrl-Z and then typing fg in the console.
Not by BREAK, lol
Also, right clicking in the command pine window is windows genius behaviour.
Reproduced. This first shows up in the 2023-12-14 build, so it started most likely with the switch to multithreading in https://github.com/FFmpeg/FFmpeg/commit/d119ae2fd82a494d9430ff4d4fc262961a68c598.