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concat 合并两个视频,第一个视频段不能快进

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发表于 2018-11-20 16:05:42 | 显示全部楼层 |阅读模式
本帖最后由 slacrey 于 2018-11-20 16:42 编辑

您好?现有test1.mp4 和 test2.mp4 他们的ffprobe信息分别如下:
ffprobe -v quiet -print_format json -show_format -show_streams test1.mp4 >>media_json1.txt
[AppleScript] 纯文本查看 复制代码
{
    "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": "1/50",
            "codec_tag_string": "avc1",
            "codec_tag": "0x31637661",
            "width": 750,
            "height": 1334,
            "coded_width": 752,
            "coded_height": 1344,
            "has_b_frames": 2,
            "pix_fmt": "yuv420p",
            "level": 32,
            "chroma_location": "left",
            "refs": 1,
            "is_avc": "true",
            "nal_length_size": "4",
            "r_frame_rate": "25/1",
            "avg_frame_rate": "25/1",
            "time_base": "1/12800",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 128000,
            "duration": "10.000000",
            "bit_rate": "1159360",
            "bits_per_raw_sample": "8",
            "nb_frames": "250",
            "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,
                "timed_thumbnails": 0
            },
            "tags": {
                "language": "und",
                "handler_name": "VideoHandler"
            }
        },
        {
            "index": 1,
            "codec_name": "aac",
            "codec_long_name": "AAC (Advanced Audio Coding)",
            "profile": "LC",
            "codec_type": "audio",
            "codec_time_base": "1/48000",
            "codec_tag_string": "mp4a",
            "codec_tag": "0x6134706d",
            "sample_fmt": "fltp",
            "sample_rate": "48000",
            "channels": 2,
            "channel_layout": "stereo",
            "bits_per_sample": 0,
            "r_frame_rate": "0/0",
            "avg_frame_rate": "0/0",
            "time_base": "1/48000",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 480000,
            "duration": "10.000000",
            "bit_rate": "128106",
            "max_bit_rate": "128106",
            "nb_frames": "470",
            "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,
                "timed_thumbnails": 0
            },
            "tags": {
                "language": "und",
                "handler_name": "SoundHandler"
            }
        }
    ],
    "format": {
        "filename": "test1.mp4",
        "nb_streams": 2,
        "nb_programs": 0,
        "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
        "format_long_name": "QuickTime / MOV",
        "start_time": "0.000000",
        "duration": "10.022000",
        "size": "1618712",
        "bit_rate": "1292126",
        "probe_score": 100,
        "tags": {
            "major_brand": "isom",
            "minor_version": "512",
            "compatible_brands": "isomiso2avc1mp41",
            "date": "2018-11-19T01:37:35.00138",
            "encoder": "Lavf58.12.100"
        }
    }
}


[AppleScript] 纯文本查看 复制代码
{
    "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": "avc1",
            "codec_tag": "0x31637661",
            "width": 750,
            "height": 1334,
            "coded_width": 752,
            "coded_height": 1344,
            "has_b_frames": 2,
            "pix_fmt": "yuv420p",
            "level": 32,
            "chroma_location": "left",
            "refs": 1,
            "is_avc": "true",
            "nal_length_size": "4",
            "r_frame_rate": "24/1",
            "avg_frame_rate": "24/1",
            "time_base": "1/12288",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 122880,
            "duration": "10.000000",
            "bit_rate": "1378724",
            "bits_per_raw_sample": "8",
            "nb_frames": "240",
            "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,
                "timed_thumbnails": 0
            },
            "tags": {
                "language": "und",
                "handler_name": "VideoHandler"
            }
        },
        {
            "index": 1,
            "codec_name": "aac",
            "codec_long_name": "AAC (Advanced Audio Coding)",
            "profile": "LC",
            "codec_type": "audio",
            "codec_time_base": "1/48000",
            "codec_tag_string": "mp4a",
            "codec_tag": "0x6134706d",
            "sample_fmt": "fltp",
            "sample_rate": "48000",
            "channels": 2,
            "channel_layout": "stereo",
            "bits_per_sample": 0,
            "r_frame_rate": "0/0",
            "avg_frame_rate": "0/0",
            "time_base": "1/48000",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 480000,
            "duration": "10.000000",
            "bit_rate": "129149",
            "max_bit_rate": "129149",
            "nb_frames": "470",
            "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,
                "timed_thumbnails": 0
            },
            "tags": {
                "language": "und",
                "handler_name": "SoundHandler"
            }
        }
    ],
    "format": {
        "filename": "test2.mp4",
        "nb_streams": 2,
        "nb_programs": 0,
        "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
        "format_long_name": "QuickTime / MOV",
        "start_time": "0.000000",
        "duration": "10.022000",
        "size": "1893103",
        "bit_rate": "1511157",
        "probe_score": 100,
        "tags": {
            "major_brand": "isom",
            "minor_version": "512",
            "compatible_brands": "isomiso2avc1mp41",
            "date": "2018-11-10T06:01:22.00971",
            "encoder": "Lavf58.12.100"
        }
    }
}



使用以下命令合并
[AppleScript] 纯文本查看 复制代码
ffmpeg -y -i test1.mp4 -i test2.mp4 -filter_complex "[0:v:0][0:a:0][1:v:0][1:a:0]concat=n=2:v=1:a=1[outv][outa]" -map "[outv]" -map "[outa]" output.mp4


另:帧率一个24,一个25,最后我均转换为25,还是一样效果
第一个视频段,不能快进


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发表于 2018-11-20 18:47:12 | 显示全部楼层
视频的快进可以考虑用setpts进行快进
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