Leak_Technologies/VideoTools
Leak_Technologies/VideoTools
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Clamp snippet conversion bitrate and ensure yuv420p

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This commit is contained in:
Stu Leak 2025-12-17 16:15:31 -05:00
parent c3a9cbd69e
commit ce5ad6e7fa
1 changed files with 29 additions and 32 deletions
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61
main.go
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@ -3791,53 +3791,50 @@ func (s *appState) executeSnippetJob(ctx context.Context, job *queue.Job, progre
"-t", fmt.Sprintf("%d", snippetLength),
}
// Apply video codec settings
// Apply video codec settings with bitrate/CRF caps to avoid runaway bitrates on short clips
targetBitrate := strings.TrimSpace(conv.VideoBitrate)
if targetBitrate == "" {
targetBitrate = defaultBitrate(conv.VideoCodec, src.Width, src.Bitrate)
}
if targetBitrate == "" {
targetBitrate = "3500k"
}
preset := conv.EncoderPreset
if preset == "" {
preset = "medium"
}
crfVal := conv.CRF
if crfVal == "" {
crfVal = crfForQuality(conv.Quality)
if crfVal == "" {
crfVal = "23"
}
}
videoCodec := strings.ToLower(conv.VideoCodec)
switch videoCodec {
case "h.264", "":
args = append(args, "-c:v", "libx264")
if conv.EncoderPreset != "" {
args = append(args, "-preset", conv.EncoderPreset)
} else {
args = append(args, "-preset", "medium")
}
if conv.CRF != "" {
args = append(args, "-crf", conv.CRF)
} else {
args = append(args, "-crf", "23")
}
args = append(args, "-preset", preset, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
case "h.265":
args = append(args, "-c:v", "libx265")
if conv.EncoderPreset != "" {
args = append(args, "-preset", conv.EncoderPreset)
} else {
args = append(args, "-preset", "medium")
}
if conv.CRF != "" {
args = append(args, "-crf", conv.CRF)
} else {
args = append(args, "-crf", "28")
}
args = append(args, "-preset", preset, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
case "vp9":
args = append(args, "-c:v", "libvpx-vp9")
if conv.CRF != "" {
args = append(args, "-crf", conv.CRF)
} else {
args = append(args, "-crf", "31")
}
args = append(args, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
case "av1":
args = append(args, "-c:v", "libsvtav1")
if conv.CRF != "" {
args = append(args, "-crf", conv.CRF)
} else {
args = append(args, "-crf", "35")
}
args = append(args, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
case "copy":
args = append(args, "-c:v", "copy")
default:
// Fallback to h264
args = append(args, "-c:v", "libx264", "-preset", "medium", "-crf", "23")
args = append(args, "-c:v", "libx264", "-preset", preset, "-crf", crfVal, "-maxrate", targetBitrate, "-bufsize", targetBitrate)
}
// Ensure standard pixel format
args = append(args, "-pix_fmt", "yuv420p")
// Apply audio codec settings
audioCodec := strings.ToLower(conv.AudioCodec)