[FFmpeg-user] hevc conversion tojpg using ffmpeg

Ketan Pratap Chauhan ketan.chauhan at stellarinfo.com
Wed Jun 27 13:42:00 EEST 2018


I was working on heif fles, I need a solution for a problem given below:

Using MP4Box:

MP4Box -info IMG_5915.HEIC

I get:

prof colour profile not supported

prof colour profile not supported

Root Meta type: "pict" - 52 resource item(s)

Primary Item - ID 49

Item #1 - ID 1 - Name:



Item #49 - ID 49 - Name:

Item #50 - ID 50 - Name: Item #51 - ID 51 - Name:

File has no movie (moov) - static data container

Then if I extract all of these:

for i in seq 51; do MP4Box -dump-item $i:path=item$i.hevc IMG_5915.HEIC; done

Then if i continue, and convert these tiles to jpeg with ffmpeg it convert one tile to jpeg i.e it creates 51 HEVC tiles.

ffmpeg -i item1.hevc -frames:v 1 -vsync vfr -q:v 1 -an image1.jpg

The above command convert a single tile to a jpg, how can I combine these 51 tiles into a single a jpg file?

Thanks & Regards,

Ketan Chauhan

Software Engineer(R&D)

Stellar Information Technology Pvt. Ltd

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