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bug处理

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This commit is contained in:
truewhile
2026-09-07 23:21:24 +08:00
parent c4b8114115
commit 5a47e6f52d
7 changed files with 108 additions and 21 deletions
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internal/service/transcoder_ffmpeg_args.go
+17 -5
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@@ -47,7 +47,10 @@ func buildFFmpegArgsForInput(cfg *config.Config, input transcodeInput, playlist,
settings := ffmpegArgSettingsFromConfig(cfg)
video := ffmpegVideoPlanForSettings(settings)
args := baseFFmpegArgs(video.preInput, settings.realtime)
// Mid-file restarts must not use -re: output -ss would otherwise crawl to the
// seek point at 1x wall-clock before emitting the first HLS segment.
realtime := settings.realtime && input.StartSec <= 0.05
args := baseFFmpegArgs(video.preInput, realtime)
args = appendInputAndVideoArgs(args, input, settings, video)
args = appendOutputHLSArgs(args, settings, segments, playlist)
return args
@@ -126,12 +129,21 @@ func baseFFmpegArgs(preInput string, realtime bool) []string {
func appendInputAndVideoArgs(args []string, input transcodeInput, settings ffmpegArgSettings, video ffmpegVideoPlan) []string {
args = append(args, ffmpegHTTPInputArgs(input)...)
// Input seek (-ss before -i) lets mid-file HLS restarts jump without
// decoding everything before the click position.
ss := ""
if input.StartSec > 0.05 {
args = append(args, "-ss", strconv.FormatFloat(input.StartSec, 'f', 3, 64))
ss = strconv.FormatFloat(input.StartSec, 'f', 3, 64)
}
args = append(args, "-i", input.Source, "-map", "0:v:0?", "-map", "0:a:0?", "-vf", video.filter, "-c:v", video.codec)
// Local files: input -ss (byte/keyframe seek). HTTP/STRM: output -ss after
// -i — several cloud/WMV demuxers ignore input seeks and would otherwise
// restart from t=0. Realtime (-re) is already disabled for StartSec > 0.
if ss != "" && !isHTTPSource(input.Source) {
args = append(args, "-ss", ss)
}
args = append(args, "-i", input.Source)
if ss != "" && isHTTPSource(input.Source) {
args = append(args, "-ss", ss)
}
args = append(args, "-map", "0:v:0?", "-map", "0:a:0?", "-vf", video.filter, "-c:v", video.codec)
if settings.threads > 0 && video.codec == "libx264" {
args = append(args, "-threads", strconv.Itoa(settings.threads))
}