How can I check the integrity of an avi file and repair it automatically in Linux?
8,239
Solution 1
try using mencoder
(the encoding part of mplayer
) like this:
mencoder -idx problemfile.avi -ovc copy -oac copy -o reindexedfile.avi
(via http://www.kahunaburger.com/2010/01/30/fixing-an-avi-index-with-mencoder/)
Solution 2
Force index
mencoder -forceidx input.avi -o output.avi -oac copy -ovc copy
Copy all
mencoder -ovc copy -oac copy input.file -o output.file
Also see https://stackoverflow.com/questions/894903/how-can-i-validate-a-video-file-from-a-script
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Author by
Alex
Updated on September 18, 2022Comments
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Alex almost 2 years
I have an avi file and tried to check it as suggested here. But after a short while I just got a segmentation fault, without any other information!
How is it possible to fix/repair this avi file? Watching this file with
mplayer
just works fine, using it withffmpeg
orkdenlive
is causing errors!System: Ubuntu 13.10 Size file: 4.2 GB
Addition:
Here is part of the output(begin and end) when running the command (the FULL output is about 1 MB of text!)
ffmpeg -v error -i file.avi -f null - Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press ctrl-c to stop encoding [dvvideo @ 0x21f39c0] AC EOB marker is absent pos=64 Last message repeated 1 times ..... (These kind of lines repeat over and over and over. I really do not see a point providing them all. There are no build information. Interlaced in the output are lines like: frame= 124 fps= 0 q=0.0 size= -0kB time=4.00 bitrate= -0.0kbits/s ) .... Last message repeated 3 times [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=69 [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=65 Last message repeated 1 times [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=71 [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=75 [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=64 Last message repeated 2 times [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=70 [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=71 [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=67 [dvvideo @ 0x1fad9c0] AC EOB marker is absent pos=65 Segmentation fault (core dumped)
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Elisa Cha Cha over 10 yearsWhat's wrong with the avi file? Why don't you show the actual errors? Can you provide a small sample file that will allow us to attempt to duplicate whever issue you are experiencing? Your
ffmpeg
command and the complete console output are important information. -
Alex over 10 yearsAs mentioned in the question, I got a
segmentation fault
, without any other message output. Maybe I can enable some debugging forffmpeg
? If so, how? -
Alex over 10 yearsI have updated the question with some of the output ffmpeg` created. If people want to have a sample: How to create this sample?
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Alex over 10 yearsYes, I do not think this is possible. Its about 1 Megabyte! If you give your email address, I can email you the complete 1 Mega-Byte output of the command !!!
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Alex over 10 yearsSee updated question
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Elisa Cha Cha over 10 yearsThe build information is missing. Provide the first ~50 lines of the console output, and provide the last ~50 lines of the console output.
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Alex over 10 yearsWith the command as specied above I get the output as given above. Again: I get EXACTLY the output as given above. There is NO build information. Again: There is no build information. I ONLY get the output as above! If you need other information please provide a way to get it!
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Elisa Cha Cha over 10 yearsThen I can only suggest to download a recent
ffmpeg
build and test with it. -
harrymc over 10 yearsIn this thread at least the errors of "AC EOB marker is absent" was caused by the x264 that ffmpeg was using, which was fixed by installing gpac-devel-static (on fedora).
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Costin Gușă over 10 yearspost the output of mplayer -identify filename.avi
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