[FFmpeg-user] ffmpeg convert a blue-ray file is so slowly
Henk D. Schoneveld
belcampo at zonnet.nl
Fri Jun 13 20:50:35 CEST 2014
On 13 Jun 2014, at 05:05, lym <xdh4025 at 163.com> wrote:
> Hi
>
>
> I'm using ffmpeg convert video. but a blue-ray film is very slowly. I doubt the question is the file has multiple channels.
What do you mean by slow ?
What CPU are you using, how many cores ?
How many fps are encoded ?
How high is CPU load ?
>
>
> my ffprobe cmd result is :
>
>
> {
> "streams": [
> {
> "index": 0,
> "codec_name": "h264",
> "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
> "profile": "High",
> "codec_type": "video",
> "codec_time_base": "1/48",
> "codec_tag_string": "[0][0][0][0]",
> "codec_tag": "0x0000",
> "width": 1280,
> "height": 692,
> "has_b_frames": 2,
> "sample_aspect_ratio": "1:1",
> "display_aspect_ratio": "320:173",
> "pix_fmt": "yuv420p",
> "level": 40,
> "r_frame_rate": "24/1",
> "avg_frame_rate": "24/1",
> "time_base": "1/1000",
> "start_pts": 0,
> "start_time": "0.000000",
> "disposition": {
> "default": 1,
> "dub": 0,
> "original": 0,
> "comment": 0,
> "lyrics": 0,
> "karaoke": 0,
> "forced": 0,
> "hearing_impaired": 0,
> "visual_impaired": 0,
> "clean_effects": 0,
> "attached_pic": 0
> }
> },
> {
> "index": 1,
> "codec_name": "dca",
> "codec_long_name": "DCA (DTS Coherent Acoustics)",
> "profile": "DTS",
> "codec_type": "audio",
> "codec_time_base": "1/48000",
> "codec_tag_string": "[0][0][0][0]",
> "codec_tag": "0x0000",
> "sample_fmt": "fltp",
> "sample_rate": "48000",
> "channels": 6,
> "channel_layout": "5.1(side)",
> "bits_per_sample": 0,
> "r_frame_rate": "0/0",
> "avg_frame_rate": "0/0",
> "time_base": "1/1000",
> "start_pts": 0,
> "start_time": "0.000000",
> "bit_rate": "1536000",
> "disposition": {
> "default": 1,
> "dub": 0,
> "original": 0,
> "comment": 0,
> "lyrics": 0,
> "karaoke": 0,
> "forced": 0,
> "hearing_impaired": 0,
> "visual_impaired": 0,
> "clean_effects": 0,
> "attached_pic": 0
> },
> "tags": {
> "language": "kor"
> }
> },
> {
> "index": 2,
> "codec_name": "subrip",
> "codec_long_name": "SubRip subtitle",
> "codec_type": "subtitle",
> "codec_time_base": "1/1000",
> "codec_tag_string": "[0][0][0][0]",
> "codec_tag": "0x0000",
> "r_frame_rate": "0/0",
> "avg_frame_rate": "0/0",
> "time_base": "1/1000",
> "start_pts": 0,
> "start_time": "0.000000",
> "duration_ts": 8016000,
> "duration": "8016.000000",
> "disposition": {
> "default": 1,
> "dub": 0,
> "original": 0,
> "comment": 0,
> "lyrics": 0,
> "karaoke": 0,
> "forced": 0,
> "hearing_impaired": 0,
> "visual_impaired": 0,
> "clean_effects": 0,
> "attached_pic": 0
> },
> "tags": {
> "language": "eng"
> }
> },
> {
> "index": 3,
> "codec_name": "pgssub",
> "codec_long_name": "HDMV Presentation Graphic Stream subtitles",
> "codec_type": "subtitle",
> "codec_time_base": "1/1000",
> "codec_tag_string": "[0][0][0][0]",
> "codec_tag": "0x0000",
> "r_frame_rate": "0/0",
> "avg_frame_rate": "0/0",
> "time_base": "1/1000",
> "start_pts": 0,
> "start_time": "0.000000",
> "duration_ts": 8016000,
> "duration": "8016.000000",
> "disposition": {
> "default": 0,
> "dub": 0,
> "original": 0,
> "comment": 0,
> "lyrics": 0,
> "karaoke": 0,
> "forced": 0,
> "hearing_impaired": 0,
> "visual_impaired": 0,
> "clean_effects": 0,
> "attached_pic": 0
> },
> "tags": {
> "language": "kor"
> }
> },
> {
> "index": 4,
> "codec_name": "pgssub",
> "codec_long_name": "HDMV Presentation Graphic Stream subtitles",
> "codec_type": "subtitle",
> "codec_time_base": "1/1000",
> "codec_tag_string": "[0][0][0][0]",
> "codec_tag": "0x0000",
> "r_frame_rate": "0/0",
> "avg_frame_rate": "0/0",
> "time_base": "1/1000",
> "start_pts": 0,
> "start_time": "0.000000",
> "duration_ts": 8016000,
> "duration": "8016.000000",
> "disposition": {
> "default": 0,
> "dub": 0,
> "original": 0,
> "comment": 0,
> "lyrics": 0,
> "karaoke": 0,
> "forced": 0,
> "hearing_impaired": 0,
> "visual_impaired": 0,
> "clean_effects": 0,
> "attached_pic": 0
> },
> "tags": {
> "language": "eng"
> }
> }
> ],
> "format": {
> "filename": "/home/admin/tomcat/webapps/ROOT/ttt.mkv",
> "nb_streams": 5,
> "nb_programs": 0,
> "format_name": "matroska,webm",
> "format_long_name": "Matroska / WebM",
> "start_time": "0.000000",
> "duration": "8016.000000",
> "size": "7057302783",
> "bit_rate": "7043216",
> "probe_score": 100,
> "tags": {
> "encoder": "libebml v1.2.3 + libmatroska v1.3.0",
> "creation_time": "2012-01-08 12:50:54"
> }
> }
> }
>
>
> and my ffmpeg command is :
> /home/admin/mts/jobagent/tools/ffmpeg -y -vsync 1 -async 1 -ss 7008 -t 12.0 -i "/home/admin/tomcat/webapps/ROOT/ttt.mkv" -map 0:0 -map 0:1 -codec:v libx264 -codec:a libfaac -b:v 200k -s 590*320 -f ssegment -segment_list_type m3u8 -segment_list "EAATEA-.m3u8" -segment_list_flags +live -segment_time 4 "fname=00000584_%08d.ts"
>
>
> The command execute very slowly , who had handle the thing.
> Thank you very much!
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> ffmpeg-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
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