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I am trying to merge a thumbnail-size (104x80) image into an audio file (M4A). I want it to be played in JW Player, but it doesn't seem to support thumbnails. I have tried it in VLC Player, but the image size gets blurred and upscaled.

I am using the following command:

ffmpeg -i image8.jpg -i file.m4a -acodec copy test.mp4

The output of the command:

command line output

How can I merge an image into the audio file so that it works in JW Player and isn't upscaled?

Indrek
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vijay
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1 Answers1

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If you were working with MP3, or FLAC, or OGG, or... any other audio format than M4A, the ffmpeg method you are describing would work perfectly well. As it is, for some reason M4A files store the album art in a different way, so you'll have to use a different tool to add in the album art, like AtomicParsley:

AtomicParsley input.m4a --artwork cover.jpg --overWrite

If you are actually trying to create a video by combining the audio and image, then your ffmpeg command should work perfectly well... are you sure it's not just the player software upscaling the video? Try running

ffplay test.mp4

...and see if it comes out the correct size (ffplay is a simple video player bundled with ffmpeg, by default it doesn't do any fancy stuff like upscaling).

Community
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evilsoup
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