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asticode / goav

Golang bindings for FFmpeg libraries

Home Page:https://github.com/asticode/goav

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How To

ivanjaros opened this issue · comments

commented

REPOST
Since goav has disabled issues i will ask in here:
I have few income streams(srt->ts->h264/aac, rtmp->flv->h264/aac,...) that i need to "normalize" into av1 and then create different quality versions(ie 240p, 360p, 4801p, 720p and 1080p). I am looking at goav but I am not seeing functions that look like they will do what I am after.

Can you hint at where to begin? I will most likely have the input codec info so I do not need to guess the codec or the container to begin with. I just need to take the packets and transcode them from codec A to codec B and that is about it.

For example I have
avCtx := avformat.AvformatAllocContext()
avCtx.AvformatNewStream()

but there is no way to get the AvCodec to pass to the new stream method so I am stuck right from the get go.

commented

I see 2 options :

  1. Checkout ffmpeg examples and see which functions should be called, when and where
  2. Checkout my GO encoder that uses goav. It's not perfect, but it aims at simplifying the use of goav by splitting your workflow by feature (demux, decode, filter, encode, mux, etc.). You can start by looking at the out-of-the-box encoder.