backgroundremover

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Hi using the docs I ran this command successfully

backgroundremover -i "/path/to/video.mp4" -tv -o "output.mov"

I had an input file created from an

iPhone, 15MB, 1440x1440, Linear PCM, Timed Metadata, HEVC. 7 seconds, 15MB

The output file when I ran the local copy of this was

1.22GB (that's GIGABYTES, nearly 100x the original size), 1440x1440, MPEG-A AAC, Animation, encoding software Lavf59.27.100

Most crucially, when I open it in QuickTime I get this error "This file contains some media that isn’t compatible with QuickTime Player."

What can I do to get this working so a) it's readable on a Mac and b) it's hopefully approximately the same size 🙂

What version of ffmpeg are you using?

Also, have you tried opening the file on https://mpv.io/ their player is what I use on ubuntu and it seems to work just fine.

ffmpeg v 5 1.2.

Even if it's readable, it's 100x the original size. Maybe the file is raw uncompressed frames (so the compression step failed?)

I have no tried with ffmpeg 5 yet, only 4.4 I presume it would still work with 5+ though. Can you try opening the file with the mpv player?

And I reference specifically this comment when I was building it https://superuser.com/a/1648130/535078

@nadermx Your version of ffmpeg is too old and does not support shortest=1. Use ffmpeg -i video.mp4 -i mask.mp4 -filter_complex "[1][0]scale2ref[mask][main];[main][mask]alphamerge" -c:v qtrle output.mov or upgrade your ffmpeg. What I meant in my last comment is that I tried 4.2.4 without shortest=1, and then viewed output.mov with the player named mpv and it had a transparent background. Best recommendation is to upgrade your ffmpeg. – llogan May 11, 2021 at 21:25

I think this is expected. It's creating a video that's just a bunch of PNGs stuck together. It might not be playable just because of the sheer bandwidth required. You can try converting it to WebM, that keeps the transparency.

I think it’d be useful to use the original codec to recompress the file. It’s how other tools work I’ve used anyway.

On Mon, 13 Feb 2023 at 16:45, Rena Kunisaki @.***> wrote:

I think this is expected. It's creating a video that's just a bunch of PNGs stuck together. It might not be playable just because of the sheer bandwidth required. You can try converting it to WebM, that keeps the transparency.

— Reply to this email directly, view it on GitHub https://github.com/nadermx/backgroundremover/issues/49#issuecomment-1428271498, or unsubscribe https://github.com/notifications/unsubscribe-auth/AABD62PQOEBBJVZJZ4GZOSTWXJQLTANCNFSM6AAAAAAUIUO5MI . You are receiving this because you authored the thread.Message ID: @.***>

Pull requests are accepted

On Mon, Feb 13, 2023 at 10:50 AM Julian Harris @.***> wrote:

I think it’d be useful to use the original codec to recompress the file. It’s how other tools work I’ve used anyway.

On Mon, 13 Feb 2023 at 16:45, Rena Kunisaki @.***> wrote:

I think this is expected. It's creating a video that's just a bunch of PNGs stuck together. It might not be playable just because of the sheer bandwidth required. You can try converting it to WebM, that keeps the transparency.

— Reply to this email directly, view it on GitHub < https://github.com/nadermx/backgroundremover/issues/49#issuecomment-1428271498 , or unsubscribe < https://github.com/notifications/unsubscribe-auth/AABD62PQOEBBJVZJZ4GZOSTWXJQLTANCNFSM6AAAAAAUIUO5MI

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I tried converting it to VP9 with transparancy but it didn't work. So I used this to convert to MP4 with white background:

ffmpeg -y -f lavfi -i color=lightgrey:s=3840x2160 -i XXX.mov -filter_complex 'overlay=0:0:shortest=1' -c:v libx264 -b:v 2000k -pass 1 -an -f mp4 /dev/null
ffmpeg -f lavfi -i color=lightgrey:s=3840x2160 -i XXX.mov -filter_complex 'overlay=0:0:shortest=1' -c:v libx264 -b:v 2000k -pass 2 -c:a aac -b:a 128k -movflags faststart  output.mp4

Note you have to adjust 3840x2160 to your video dimensions.

So just to clarify, you want me to find a way to compress the transparent mov?

That’d be amazing. I was thinking of doing it at some point but I’m on other projects at the moment so it might be a few months away.

On Fri, 5 May 2023 at 21:06, Johnathan Nader @.***> wrote:

So just to clarify, you want me to find a way to compress the transparent mov?

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Maybe moviepy can do it?

On Fri, 5 May 2023 at 21:22, Julian Harris @.***> wrote:

That’d be amazing. I was thinking of doing it at some point but I’m on other projects at the moment so it might be a few months away.

On Fri, 5 May 2023 at 21:06, Johnathan Nader @.***> wrote:

So just to clarify, you want me to find a way to compress the transparent mov?

— Reply to this email directly, view it on GitHub https://github.com/nadermx/backgroundremover/issues/49#issuecomment-1536720739, or unsubscribe https://github.com/notifications/unsubscribe-auth/AABD62PXVUJRSQVW3NK2FTTXEVMVFANCNFSM6AAAAAAUIUO5MI . You are receiving this because you authored the thread.Message ID: @.***>

Would be ffmpeg doing it

El vie, 5 de may de 2023 16:23, Julian Harris @.***> escribió:

Maybe moviepy can do it?

On Fri, 5 May 2023 at 21:22, Julian Harris @.***> wrote:

That’d be amazing. I was thinking of doing it at some point but I’m on other projects at the moment so it might be a few months away.

On Fri, 5 May 2023 at 21:06, Johnathan Nader @.***> wrote:

So just to clarify, you want me to find a way to compress the transparent mov?

— Reply to this email directly, view it on GitHub < https://github.com/nadermx/backgroundremover/issues/49#issuecomment-1536720739 , or unsubscribe < https://github.com/notifications/unsubscribe-auth/AABD62PXVUJRSQVW3NK2FTTXEVMVFANCNFSM6AAAAAAUIUO5MI

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