Opened 6 years ago
Last modified 5 years ago
#6707 open defect
v4l2_m2m: fix full reinit
| Reported by: | Jorge Ramirez-Ortiz | Owned by: | Jorge Ramirez-Ortiz |
|---|---|---|---|
| Priority: | normal | Component: | avcodec |
| Version: | git-master | Keywords: | v4l2m2m |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | yes |
Description
Summary of the bug:
How to reproduce:
Decode a video stream which increases the video resolution at runtime.
The current implementation is buggy -works depending on stream and codec being used- since full-reinit closes the v4l2 file descriptor and therefore loses important header information used by the hardware.
Initially I assumed it to be a hardware/driver issue - the platforms used to test[1] had a common bug in its driver that hid the issue- but further analysis revealed it is just a simple bug (2 man/day to fix)
[1] dragon board 820c: works correctly
[2] dragon board 410c: only h263 works
I will submit a fix in the coming weeks.
Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.
Change History (2)
comment:1 by , 6 years ago
| Owner: | set to |
|---|---|
| Status: | new → open |
comment:2 by , 5 years ago
| Keywords: | v4l2m2m added; v4l2_m2m removed |
|---|
