owncast/core/ffmpeg/transcoder_test.go

package ffmpeg

import (
	"testing"
)

func TestFFmpegCommand(t *testing.T) {
	transcoder := new(Transcoder)
	transcoder.ffmpegPath = "/fake/path/ffmpeg"
	transcoder.SetSegmentLength(4)
	transcoder.SetInput("fakecontent.flv")
	transcoder.SetOutputPath("fakeOutput")
	transcoder.SetHLSPlaylistLength(10)
	transcoder.SetIdentifier("jdofFGg")
	transcoder.SetInternalHTTPPort(8123)

	variant := HLSVariant{}
	variant.videoBitrate = 1200
	variant.isAudioPassthrough = true
	variant.encoderPreset = "veryfast"
	variant.SetVideoFramerate(30)
	transcoder.AddVariant(variant)

	variant2 := HLSVariant{}
	variant2.videoBitrate = 3500
	variant2.isAudioPassthrough = true
	variant2.encoderPreset = "faster"
	variant2.SetVideoFramerate(24)
	transcoder.AddVariant(variant2)

	variant3 := HLSVariant{}
	variant3.isAudioPassthrough = true
	variant3.isVideoPassthrough = true
	transcoder.AddVariant(variant3)

	cmd := transcoder.getString()

	expected := `/fake/path/ffmpeg -hide_banner -loglevel warning -i  fakecontent.flv  -map v:0 -c:v:0 libx264 -b:v:0 1200k -maxrate:v:0 1272k -bufsize:v:0 1440k -g:v:0 119 -profile:v:0 high -r:v:0 30 -x264-params:v:0 "scenecut=0:open_gop=0:min-keyint=119:keyint=119" -map a:0 -c:a:0 copy -preset veryfast -map v:0 -c:v:1 libx264 -b:v:1 3500k -maxrate:v:1 3710k -bufsize:v:1 4200k -g:v:1 95 -profile:v:1 high -r:v:1 24 -x264-params:v:1 "scenecut=0:open_gop=0:min-keyint=95:keyint=95" -map a:0 -c:a:1 copy -preset faster -map v:0 -c:v:2 copy -map a:0 -c:a:2 copy  -var_stream_map "v:0,a:0 v:1,a:1 v:2,a:2 " -f hls -hls_time 4 -hls_list_size 10 -hls_delete_threshold 10  -tune zerolatency -pix_fmt yuv420p -sc_threshold 0 -master_pl_name stream.m3u8 -strftime 1 -hls_segment_filename http://127.0.0.1:8123/%v/stream-jdofFGg%s.ts -max_muxing_queue_size 400 -method PUT -http_persistent 0 -fflags +genpts http://127.0.0.1:8123/%v/stream.m3u8 2> transcoder.log`

	if cmd != expected {
		t.Errorf("ffmpeg command does not match expected.\nGot %s\n, want: %s", cmd, expected)
	}
}