Alex X
69 lines
1.3 KiB
Go
69 lines
1.3 KiB
Go
package ffmpeg
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import (
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"bytes"
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"errors"
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"os/exec"
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"strings"
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"sync"
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"github.com/rs/zerolog/log"
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)
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var checkMu sync.Mutex
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var checkErr error
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var checkVer string
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const (
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FFmpeg50 = "59. 16"
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FFmpeg51 = "59. 27"
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FFmpeg60 = "60. 3"
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FFmpeg61 = "60. 16"
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FFmpeg70 = "61. 1"
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)
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func Version() (string, error) {
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checkMu.Lock()
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defer checkMu.Unlock()
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if checkVer != "" {
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return checkVer, checkErr
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}
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cmd := exec.Command(defaults["bin"], "-version")
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b, err := cmd.Output()
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if err != nil {
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checkVer = "-"
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checkErr = err
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return checkVer, checkErr
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}
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if len(b) < 100 {
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checkVer = "?"
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return checkVer, nil
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}
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// ffmpeg version n7.0-30-g8b0fe91754-20240520 Copyright (c) 2000-2024 the FFmpeg developers
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b = b[15:]
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if i := bytes.IndexByte(b, ' '); i > 0 {
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checkVer = string(b[:i])
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}
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// libavformat 60. 16.100 / 60. 16.100
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if i := strings.Index(string(b), "libavformat"); i > 0 {
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// better to compare libavformat, because nightly/master builds
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libav := string(b[i+15 : i+25])
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if libav < FFmpeg50 {
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checkErr = errors.New("ffmpeg: unsupported version: " + checkVer)
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return checkVer, checkErr
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}
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if libav < FFmpeg61 && strings.Contains(defaults["file"], "readrate_initial_burst") {
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defaults["file"] = "-re -i {input}"
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}
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}
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log.Debug().Str("version", checkVer).Msgf("[ffmpeg] bin")
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return checkVer, nil
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}
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