#4591: attachments mjpeg are discovered wrongly as video stream and therefore
h264
encoding is broken
-------------------------------------+-------------------------------------
Reporter: TheoMeister | Owner:
Type: defect | Status: new
Priority: important | Component: avformat
Version: git-master | Resolution:
Keywords: mkv | Blocked By:
regression | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by TheoMeister):
ffmpeg doesn't try to encode it anymore - anyway, the attachments are not
copied but changed to video streams.
ffmpeg breaks the existing attachments because they are not detected as
attachments but as video streams, and therefore they are handled as if
they would be video streams. During copy(!!), the attachments are
changed(!!) to video streams.
mediainfo before using ffmpeg (original file):
General
Unique ID :
9206505738904495848916047746595705552 (0x6ED1BC737C3FC4CE5492CAFFFC252D0)
Complete name : cover_art.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 2.15 MiB
Duration : 10s 425ms
Overall bit rate : 1 734 Kbps
Movie name : Dexter Season 5 trailer
Writing application : Lavf56.25.101
Writing library : Lavf56.25.101
ORIGINAL/URL : http://www.youtube.com/watch?v
=CUbCMbW-BRE
SAMPLE/TITLE : Trailer
COPYRIGHT : ShowTime
COPYRIGHT/URL : http://www.sho.com/
PART_NUMBER : 5
DATE_RELEASE : 2010
SAMPLE/PART_NUMBER : 0
FILENAME : small_cover_land.jpg
MIMETYPE : image/jpeg
Attachements : cover.jpg / small_cover.jpg /
cover_land.jpg / small_cover_land.jpg
...
mediainfo after using ffmpeg according your suggestions:
Video #2
ID : 3
Format : V_MJPEG
Codec ID : V_MJPEG
Duration : 10s 424ms
Width : 600 pixels
Height : 882 pixels
Display aspect ratio : 0.680
Frame rate mode : Constant
Frame rate : 90 000.898 fps
Default : No
Forced : No
FILENAME : cover.jpg
MIMETYPE : image/jpeg
Video #3
ID : 4
Format : V_MJPEG
Codec ID : V_MJPEG
Duration : 10s 424ms
Width : 120 pixels
Height : 176 pixels
Display aspect ratio : 0.682
Frame rate mode : Constant
Frame rate : 90 000.898 fps
Default : No
Forced : No
FILENAME : small_cover.jpg
MIMETYPE : image/jpeg
Video #4
ID : 5
Format : V_MJPEG
Codec ID : V_MJPEG
Duration : 10s 424ms
Width : 1 067 pixels
Height : 600 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 90 000.898 fps
Default : No
Forced : No
FILENAME : cover_land.jpg
MIMETYPE : image/jpeg
Video #5
ID : 6
Format : V_MJPEG
Codec ID : V_MJPEG
Duration : 10s 424ms
Width : 213 pixels
Height : 120 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 90 000.898 fps
Default : No
Forced : No
FILENAME : small_cover_land.jpg
MIMETYPE : image/jpeg
..
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4591#comment:6>
FFmpeg <https://ffmpeg.org>
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