Opened 20 years ago

Closed 19 years ago

#711 closed defect (worksforme)

Problems playing FFMPEG generated AVIs

Reported by: john.sergeant@… Owned by: mans@…
Priority: normal Component: libavformat
Version: unspecified Severity: minor
Keywords: Cc:
Blocked By: Blocking:
Reproduced by developer: no Analyzed by developer: no

Description

AVI re-compressed using Motion JPEG will not play on Windows Media Player
*or* WinAmp (although MPlayer works ok). Example :

mencoder -oac -ovc lavc vcodec=mjpeg:mbd=2:turbo=1 in.avi -o out.avi

This seems to be caused by the extradata_size being added to the strh BITMAPINFOHEADER structure size field in put_bmp_header(...) in riff.c -if the structure size is set back to 40 with a hex editor the AVI file will play in all players that I have tried.

Attachments (2)

test_duff.avi​ (138.8 KB ) - added by john.sergeant@… 19 years ago.
MJPEG compressed AVI created using ffmpeg + mencoder
test_ok.avi​ (138.8 KB ) - added by john.sergeant@… 19 years ago.
Same AVI with byte at offset 0xAC changed to 0x28

Download all attachments as: .zip

Change History (6)

comment:1 by mans@…, 19 years ago

Please upload a sample.

by john.sergeant@…, 19 years ago

Attachment: test_duff.avi​ added

MJPEG compressed AVI created using ffmpeg + mencoder

comment:2 by john.sergeant@…, 19 years ago

by john.sergeant@…, 19 years ago

Attachment: test_ok.avi​ added

Same AVI with byte at offset 0xAC changed to 0x28

comment:3 by john.sergeant@…, 19 years ago

comment:4 by compn, 19 years ago

Resolution: → worksforme
Status: new → closed

closing all ffmpeg bugs

C:\mplayer>mencoder -nosound -ovc lavc -lavcopts vcodec=mjpeg:mbd=2:turbo=1 -o o
ut.avi vid00009.avi

works for me in wmp using morgan mjpeg codec to decode.

if ffmpeg still creates unplayable files, please make a new report at ffmpegs roundup tracker

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