Opened 13 years ago
Closed 13 years ago
#1015 closed defect (needs_more_info)
Encode/Decode issues with ProRes 444 Sample
Reported by: | Andrew Hunter | Owned by: | |
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Priority: | normal | Component: | undetermined |
Version: | git-master | Keywords: | prores |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Sample is available from: http://files.aehunter.net/DIVISION_SAMPLE.mov
As the sample is only 10MB, it likely consists of only pre-roll (bars and tone and a sync countdown).
Couple of things I noticed (log: http://pastebin.ca/2120881)
1) Copying the video stream in to a new (shorter) file results in the wrong pix_fmt when probed. yuv422p10le instead of yuv444p10le.
2) Duration of the original file is reported incorrectly. 00:10:39.88 instead of aprox 15 min.
Finally, output from ffmpeg results in garbage image data and severely out of sync audio.
Change History (7)
comment:1 by , 13 years ago
comment:2 by , 13 years ago
Sample was created as per instructions on http://ffmpeg.org/bugreports.html. Instructions are useless. </s>
On a more serious note, I will trim a sample using Quicktime on a Final Cut editing station and upload. Looks like using dd doesn't work for movs.
follow-up: 4 comment:3 by , 13 years ago
oops, yeah, you cant play incomplete movs. we should update the instructions...
follow-up: 5 comment:4 by , 13 years ago
Replying to compn:
oops, yeah, you cant play incomplete movs. we should update the instructions...
Why?
I believe it is pretty obvious that only samples that allow to reproduce the problem make sense. We only request to shorten samples (which is very often very useful) if they are uploaded to our server which is not the case here. And finally, I always explain on this tracker that you have to run tools/qt-faststart before cutting mov files.
follow-up: 6 comment:5 by , 13 years ago
Replying to cehoyos:
Replying to compn:
oops, yeah, you cant play incomplete movs. we should update the instructions...
Why?
I believe it is pretty obvious that only samples that allow to reproduce the problem make sense. We only request to shorten samples (which is very often very useful) if they are uploaded to our server which is not the case here. And finally, I always explain on this tracker that you have to run tools/qt-faststart before cutting mov files.
I had no idea that tool existed nor its use for debugging. That would be helpful on the bug reporting page. Wouldn't that save you from having to explain that on the tracker?
If the sample need to be uploaded to your ftp, I will happily do so.
comment:6 by , 13 years ago
Replying to rexbron:
I had no idea that tool existed nor its use for debugging. That would be helpful on the bug reporting page. Wouldn't that save you from having to explain that on the tracker?
If the sample need to be uploaded to your ftp, I will happily do so.
Please upload the complete sample (or use tools/qt-faststart to prepare your mov sample for cutting).
comment:7 by , 13 years ago
Resolution: | → needs_more_info |
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Status: | new → closed |
Please reopen the ticket if you can provide a sample.
Provided sample is useless.