[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!
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user

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