Hello,
is there anyone who maintains the "dvvideo" module, who can review this
patch and give me some feedback?
Greets Mark
Am 16.01.21 um 14:40 schrieb Mark Plomer:
Trying to fix https://trac.ffmpeg.org/ticket/8333
Some of my old DV AVI files have the DSF-Flag of frames set to 0,
although it is PAL (I think they were rendered with Ulead Media Studio
Pro) ... this causes ffmpeg/VLC-player to produce/play corrupted video.
In other players/editors it works fine including:
- VirtualDub
- Windows Media Player
- AVCutty
- Ulead Media Studio Pro (very old)
I had a look at VirtualDub ... there the PAL/NTSC detection is based
on the frame rate from AVISTREAMINFO header (dwRate/dwScale) - see
https://github.com/Pavuucek/VirtualDub/blob/f47ebd2536f0034b048180d0b9cb9bde0ab10c73/src/VirtualDub/source/VideoSource.cpp#L1211
As I don't know, how to access the AVI header info inside
dvvideo_decode_frame()/ff_dv_frame_profile(), I tried another
workaround by checking the buf_size against the dv_profile.
It works fine now, but I don't know, if this is really the best
solution ...
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