82d61d1f93
Animated GIFs are transcoded to AVC because it is much smaller and thus also suitable for long/large animations. In addition, this commit adds support for more metadata fields such as frame rate, number of frames, file capture timestamp (unix milliseconds), media type, and software version. Support for SVG files can later be implemented in a similar way.
148 lines
2.9 KiB
Go
148 lines
2.9 KiB
Go
package ffmpeg
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import (
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"fmt"
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"os/exec"
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"github.com/photoprism/photoprism/pkg/fs"
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)
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// AvcConvertCommand returns the command for converting video files to MPEG-4 AVC.
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func AvcConvertCommand(fileName, avcName, ffmpegBin, bitrate string, encoder AvcEncoder) (result *exec.Cmd, useMutex bool, err error) {
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if fileName == "" {
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return nil, false, fmt.Errorf("empty input filename")
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} else if avcName == "" {
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return nil, false, fmt.Errorf("empty output filename")
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}
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// Don't transcode more than one video at the same time.
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useMutex = true
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// Animated GIF?
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if fs.FileFormat(fileName) == fs.FormatGif {
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result = exec.Command(
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ffmpegBin,
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"-i", fileName,
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"-movflags", "faststart",
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"-pix_fmt", "yuv420p",
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"-vf", "scale=trunc(iw/2)*2:trunc(ih/2)*2",
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"-f", "mp4",
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"-y",
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avcName,
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)
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return result, useMutex, nil
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}
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// Display encoder info.
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if encoder != SoftwareEncoder {
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log.Infof("convert: ffmpeg encoder %s selected", string(encoder))
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}
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switch encoder {
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case IntelEncoder:
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// ffmpeg -hide_banner -h encoder=h264_qsv
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format := "format=rgb32"
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result = exec.Command(
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ffmpegBin,
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"-qsv_device", "/dev/dri/renderD128",
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"-i", fileName,
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"-c:a", "aac",
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"-vf", format,
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"-c:v", string(encoder),
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"-vsync", "vfr",
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"-r", "30",
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"-b:v", bitrate,
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"-itrate", bitrate,
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"-f", "mp4",
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"-y",
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avcName,
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)
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case AppleEncoder:
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// ffmpeg -hide_banner -h encoder=h264_videotoolbox
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format := "format=yuv420p"
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result = exec.Command(
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ffmpegBin,
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"-i", fileName,
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"-c:v", string(encoder),
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"-c:a", "aac",
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"-vf", format,
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"-profile", "high",
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"-level", "51",
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"-vsync", "vfr",
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"-r", "30",
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"-b:v", bitrate,
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"-f", "mp4",
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"-y",
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avcName,
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)
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case NvidiaEncoder:
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// ffmpeg -hide_banner -h encoder=h264_nvenc
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result = exec.Command(
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ffmpegBin,
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"-r", "30",
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"-i", fileName,
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"-pix_fmt", "yuv420p",
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"-c:v", string(encoder),
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"-c:a", "aac",
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"-preset", "15",
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"-pixel_format", "yuv420p",
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"-gpu", "any",
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"-vf", "format=yuv420p",
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"-rc:v", "constqp",
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"-cq", "0",
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"-tune", "2",
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"-b:v", bitrate,
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"-profile:v", "1",
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"-level:v", "41",
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"-coder:v", "1",
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"-f", "mp4",
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"-y",
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avcName,
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)
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case Video4LinuxEncoder:
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// ffmpeg -hide_banner -h encoder=h264_v4l2m2m
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format := "format=yuv420p"
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result = exec.Command(
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ffmpegBin,
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"-i", fileName,
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"-c:v", string(encoder),
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"-c:a", "aac",
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"-vf", format,
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"-num_output_buffers", "72",
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"-num_capture_buffers", "64",
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"-max_muxing_queue_size", "1024",
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"-crf", "23",
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"-vsync", "vfr",
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"-r", "30",
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"-b:v", bitrate,
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"-f", "mp4",
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"-y",
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avcName,
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)
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default:
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format := "format=yuv420p"
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result = exec.Command(
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ffmpegBin,
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"-i", fileName,
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"-c:v", string(encoder),
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"-c:a", "aac",
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"-vf", format,
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"-max_muxing_queue_size", "1024",
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"-crf", "23",
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"-vsync", "vfr",
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"-r", "30",
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"-b:v", bitrate,
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"-f", "mp4",
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"-y",
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avcName,
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)
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}
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return result, useMutex, nil
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}
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