[Libav-user] video cover art

[YIRAN LI]

Hi guys,

I'm investigating how to insert/keep video cover art with ffmpeg.

Could any one give me help on these 2 questions.

1. Of all these formats asf, avi, dv, flv, mkv, mov, mp4, m4v, mpeg, ogg,
rm. swf, webm, which ones support cover art. I know a cover art will/can be
added as a video stream into target file. By "Support" I mean standard has
a definition and the existence of cover art can be viewed/verified by some
tools?

2. Of all above formats that support cover art, which of them are supported
by ffmpeg so that we can add cover art with ffmpeg?


I used following ffmpeg command line to add an image into a MP4, but in
Win10 folder preview doesn't show that image

*$ ffmpeg -i big10.mp4 -i Untitled.png -c:a copy -c:v copy -map 0 -map 1:0
aaa.mp4*

ffprobe you can see it does have 3 streams

*  Duration: 00:01:00.19, start: 0.000000, bitrate: 805 kb/s*
*    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
640x360 [SAR 1:1 DAR 16:9], 727 kb/s, 23.91 fps, 23.98 tbr, 19168 tbn,
38336 tbc (default)*
*    Metadata:*
*      handler_name    : VideoHandler*
*    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz,
stereo, fltp, 76 kb/s (default)*
*    Metadata:*
*      handler_name    : SoundHandler*
*    Stream #0:2(und): Video: png (mp4v / 0x7634706D), rgb24(pc), 640x360
[SAR 3779:3779 DAR 16:9], 912 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc*
*    Metadata:*
*      handler_name    : VideoHandler*

But if I add cover art via AtomicParsley, generated file can show preview
in Win explorer. Bellow is the ffprobe output of AtomicParsley generated
file

*[mov,mp4,m4a,3gp,3g2,mj2 @ 0000000000eb98e0] stream 0, timescale not set*
*Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'big11-temp-25498.mp4':*
*  Metadata:*
*    major_brand     : isom*
*    minor_version   : 512*
*    compatible_brands: isomiso2avc1mp41*
*    encoder         : Lavf55.33.100*
*  Duration: 00:01:00.19, start: 0.000000, bitrate: 805 kb/s*
*    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
640x360 [SAR 1:1 DAR 16:9], 727 kb/s, 23.91 fps, 23.98 tbr, 19168 tbn,
38336 tbc (default)*
*    Metadata:*
*      handler_name    : VideoHandler*
*    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz,
stereo, fltp, 76 kb/s (default)*
*    Metadata:*
*      handler_name    : SoundHandler*
*    Stream #0:2: Video: png, rgb24(pc), 640x360 [SAR 3779:3779 DAR 16:9],
90k tbr, 90k tbn, 90k tbc*


Thanks for help
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