Opened 14 years ago
Closed 9 years ago
#162 closed defect (fixed)
Avid AVI Codec - wrong resolution reported by FFmpeg
| Reported by: | ami_stuff | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | avcodec |
| Version: | git-master | Keywords: | mjpeg cropping AVID avi roundup |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | no |
Description
issue 1494
https://roundup.libav.org/file579/avid.avi
Author: ami_stuff Date: 2009-10-19.18:53:59
Attached file is encoded with "Avid AVI Codec" and have 720x576 resolution, but
FFmpeg reports 720x592 and adds black bar on the top of the video.
--------
C:\>ffmpeg -i avid.avi
FFmpeg version SVN-r20231, Copyright (c) 2000-2009 Fabrice Bellard, et al.
built on Oct 14 2009 04:04:42 with gcc 4.2.4
configuration: --enable-memalign-hack --prefix=/mingw --cross-prefix=i686-ming
w32- --cc=ccache-i686-mingw32-gcc --target-os=mingw32 --arch=i686 --cpu=i686 --e
nable-avisynth --enable-gpl --enable-version3 --enable-zlib --enable-bzlib --ena
ble-libgsm --enable-libfaad --enable-pthreads --enable-libvorbis --enable-libthe
ora --enable-libspeex --enable-libmp3lame --enable-libopenjpeg --enable-libxvid
--enable-libschroedinger --enable-libx264 --enable-libopencore_amrwb --enable-li
bopencore_amrnb
libavutil 50. 3. 0 / 50. 3. 0
libavcodec 52.37. 0 / 52.37. 0
libavformat 52.39. 1 / 52.39. 1
libavdevice 52. 2. 0 / 52. 2. 0
libswscale 0. 7. 1 / 0. 7. 1
[mjpeg @ 0x1a68250]Found 1 unreleased buffers!
Input #0, avi, from 'avid.avi':
Duration: 00:00:01.79, start: 0.000000, bitrate: 4289 kb/s
Stream #0.0: Video: mjpeg, yuvj422p, 720x592, 23.97 tbr, 23.97 tbn, 23.97 tb
c
Stream #0.1: Audio: mp3, 44100 Hz, 2 channels, s16, 128 kb/s
At least one output file must be specified
Author: cehoyos Date: 2009-10-19.23:46:14 Reproducible with mplayer avid.avi -vc avid
Attachments (4)
Change History (17)
by , 14 years ago
comment:1 by , 14 years ago
| Component: | undetermined → avcodec |
|---|---|
| Reproduced by developer: | set |
| Status: | new → open |
| Version: | unspecified → git-master |
comment:2 by , 13 years ago
comment:3 by , 13 years ago
| Keywords: | mjpeg cropping added |
|---|
comment:4 by , 13 years ago
| Keywords: | AVID added |
|---|
comment:5 by , 12 years ago
| Keywords: | roundup added |
|---|
comment:6 by , 12 years ago
| Keywords: | avi added |
|---|
follow-up: 8 comment:7 by , 11 years ago
Can the correct / croped width/height be extracted from the avid codec bitstream / extradata ?
follow-up: 9 comment:8 by , 11 years ago
Replying to michael:
Can the correct / croped width/height be extracted from the avid codec bitstream / extradata ?
The cropped size is set both in the avih and the strf tag.
comment:9 by , 11 years ago
Replying to cehoyos:
Replying to michael:
Can the correct / croped width/height be extracted from the avid codec bitstream / extradata ?
The cropped size is set both in the avih and the strf tag.
does the binary decoder use these, that is does it decode the full resolution if these 2 values are increased ?
by , 11 years ago
| Attachment: | avidavih.avi added |
|---|
by , 11 years ago
| Attachment: | avidstrf.avi added |
|---|
by , 11 years ago
| Attachment: | avidvids.avi added |
|---|
follow-up: 11 comment:10 by , 11 years ago
Three samples for testing with the original decoder attached.
comment:11 by , 11 years ago
Replying to cehoyos:
Three samples for testing with the original decoder attached.
here is the output:
comment:12 by , 11 years ago
The relevant value is within the strf tag, ie all samples except avidstrf.avi should display 576 lines.
The original decoder scales the 576 lines of actual content to the 592 lines indicated in the header of avidstrf.avi.
comment:13 by , 9 years ago
| Resolution: | → fixed |
|---|---|
| Status: | open → closed |
i know how to fix this once we support arbitrary crop values.