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Sur d’autres sites (10034)

  • Streaming video .mp4 H.264 baseline not working on some videos [duplicate]

    8 janvier 2019, par D. B.

    This question already has an answer here :

    I use server to stream recorder videos on Android phones and play them in Android app later. However I noticed that I am not able to play all videos, I used ffmpeg to see if there is any difference in recorded videos and where the issue might be.
    That is an example of loading and playing video :

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'w1.mp4':
    

    

    
Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2019-01-07T15:38:52.000000Z
    
    com.android.version: 8.1.0
    
  Duration: 00:00:04.94, start: 0.000000, bitrate: 5003 kb/s
    
    Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt470bg/smpte170m), 720x480, 4951 kb/s, SAR 1:1 DAR 3:2, 27.71 fps, 30 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      rotate          : 90
    
      creation_time   : 2019-01-07T15:38:52.000000Z
    
      handler_name    : VideoHandle
    
    Side data:
    
      displaymatrix: rotation of -90.00 degrees
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 48 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-01-07T15:38:52.000000Z
    
      handler_name    : SoundHandle
    
    "streams": [
    
        {
    
            "index": 0,
    
            "codec_name": "h264",
    
            "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
    
            "profile": "Baseline",
    
            "codec_type": "video",
    
            "codec_time_base": "444929/24660000",
    
            "codec_tag_string": "avc1",
    
            "codec_tag": "0x31637661",
    
            "width": 720,
    
            "height": 480,
    
            "coded_width": 720,
    
            "coded_height": 480,
    
            "has_b_frames": 0,
    
            "sample_aspect_ratio": "1:1",
    
            "display_aspect_ratio": "3:2",
    
            "pix_fmt": "yuv420p",
    
            "level": 30,
    
            "color_range": "tv",
    
            "color_space": "smpte170m",
    
            "color_transfer": "smpte170m",
    
            "color_primaries": "bt470bg",
    
            "chroma_location": "left",
    
            "refs": 1,
    
            "is_avc": "true",
    
            "nal_length_size": "4",
    
            "r_frame_rate": "30/1",
    
            "avg_frame_rate": "12330000/444929",
    
            "time_base": "1/90000",
    
            "start_pts": 0,
    
            "start_time": "0.000000",
    
            "duration_ts": 444929,
    
            "duration": "4.943656",
    
            "bit_rate": "4951506",
    
            "bits_per_raw_sample": "8",
    
            "nb_frames": "137",
    
            "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": {
    
                "rotate": "90",
    
                "creation_time": "2019-01-07T15:38:52.000000Z",
    
                "language": "eng",
    
                "handler_name": "VideoHandle"
    
            },
    
            "side_data_list": [
    
                {
    
                    "side_data_type": "Display Matrix",
    
                    "displaymatrix": "\n00000000:            0       65536           0\n00000001:       -65536           0           0\n00000002:            0           0  1073741824\n",
    
                    "rotation": -90
    
                }
    
            ]
    
        }
    
    ]
    
}

    Next is the example of not working video :

    [mov,mp4,m4a,3gp,3g2,mj2 @ 000001ea0adcd700] sample aspect ratio already set to 1:1, ignoring 'pasp' atom (65536:65536)
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'notworking.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2018-12-30T14:20:23.000000Z
    
    com.android.version: 7.0
    
  Duration: 00:00:10.16, start: 0.000000, bitrate: 5240 kb/s
    
    Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt470bg/smpte170m), 720x480, 5223 kb/s, SAR 1:1 DAR 3:2, 29.30 fps, 59.94 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      rotate          : 90
    
      creation_time   : 2018-12-30T14:20:23.000000Z
    
      handler_name    : VideoHandle
    
    Side data:
    
      displaymatrix: rotation of -90.00 degrees
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, mono, fltp, 12 kb/s (default)
    
    Metadata:
    
      creation_time   : 2018-12-30T14:20:23.000000Z
    
      handler_name    : SoundHandle
    
    "streams": [
    
        {
    
            "index": 0,
    
            "codec_name": "h264",
    
            "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
    
            "profile": "Baseline",
    
            "codec_type": "video",
    
            "codec_time_base": "20751/1216000",
    
            "codec_tag_string": "avc1",
    
            "codec_tag": "0x31637661",
    
            "width": 720,
    
            "height": 480,
    
            "coded_width": 720,
    
            "coded_height": 480,
    
            "has_b_frames": 0,
    
            "sample_aspect_ratio": "1:1",
    
            "display_aspect_ratio": "3:2",
    
            "pix_fmt": "yuv420p",
    
            "level": 30,
    
            "color_range": "tv",
    
            "color_space": "smpte170m",
    
            "color_transfer": "smpte170m",
    
            "color_primaries": "bt470bg",
    
            "chroma_location": "left",
    
            "refs": 1,
    
            "is_avc": "true",
    
            "nal_length_size": "4",
    
            "r_frame_rate": "60000/1001",
    
            "avg_frame_rate": "608000/20751",
    
            "time_base": "1/90000",
    
            "start_pts": 0,
    
            "start_time": "0.000000",
    
            "duration_ts": 914271,
    
            "duration": "10.158567",
    
            "bit_rate": "5223363",
    
            "bits_per_raw_sample": "8",
    
            "nb_frames": "304",
    
            "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": {
    
                "rotate": "90",
    
                "creation_time": "2018-12-30T14:20:23.000000Z",
    
                "language": "eng",
    
                "handler_name": "VideoHandle"
    
            },
    
            "side_data_list": [
    
                {
    
                    "side_data_type": "Display Matrix",
    
                    "displaymatrix": "\n00000000:            0       65536           0\n00000001:       -65536           0           0\n00000002:            0           0  1073741824\n",
    
                    "rotation": -90
    
                }
    
            ]
    
        }
    
    ]
    
}

    I cannot see any difference in the videos characteristics. Both are baseline H.264.
    Both videos are playing in chrome when I access them via direct links, the problem is on android versions 6, 7, 8.
    There is strange thing because when I downloaded that not loading video directly and put in the android app to raw folder and played it directly everything worked perfectly.
    I checked if the problem was bandwidth, so I uploaded bigger video about 12Mbs, mp4 as well H.264 Main and then streamed it to the app and it worked like a charm. So I suspect that the issue might be with recording bigger files within my android app.
    To stream video I only use MediaPlayer.

    That is an example of the video I uploaded and later streamed :

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '123456.mp4':
    

    

    
Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2018-01-30T06:50:54.000000Z
    
  Duration: 00:02:29.16, start: 0.000000, bitrate: 700 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 571 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
    
    Metadata:
    
      creation_time   : 2018-01-30T06:50:54.000000Z
    
      handler_name    : ISO Media file. Created on: 01/29/2018.
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
    
    Metadata:
    
      creation_time   : 2018-01-30T06:50:54.000000Z
    
      handler_name    : ISO Media file. Created on: 01/29/2018.
    
    "streams": [
    
        {
    
            "index": 0,
    
            "codec_name": "h264",
    
            "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
    
            "profile": "Main",
    
            "codec_type": "video",
    
            "codec_time_base": "1/50",
    
            "codec_tag_string": "avc1",
    
            "codec_tag": "0x31637661",
    
            "width": 1280,
    
            "height": 720,
    
            "coded_width": 1280,
    
            "coded_height": 720,
    
            "has_b_frames": 1,
    
            "sample_aspect_ratio": "1:1",
    
            "display_aspect_ratio": "16:9",
    
            "pix_fmt": "yuv420p",
    
            "level": 31,
    
            "color_range": "tv",
    
            "color_space": "bt709",
    
            "color_transfer": "bt709",
    
            "color_primaries": "bt709",
    
            "chroma_location": "left",
    
            "refs": 1,
    
            "is_avc": "true",
    
            "nal_length_size": "4",
    
            "r_frame_rate": "25/1",
    
            "avg_frame_rate": "25/1",
    
            "time_base": "1/90000",
    
            "start_pts": 0,
    
            "start_time": "0.000000",
    
            "duration_ts": 13424400,
    
            "duration": "149.160000",
    
            "bit_rate": "571258",
    
            "bits_per_raw_sample": "8",
    
            "nb_frames": "3729",
    
            "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": {
    
                "creation_time": "2018-01-30T06:50:54.000000Z",
    
                "language": "und",
    
                "handler_name": "ISO Media file. Created on: 01/29/2018."
    
            }
    
        }
    
    ]
    
}
    

    
Is there any chance that my hosting provider uses some kind of software that can manipulate data that is on the server?

    I also check manually other videos from different websites by inserting links manually in the code to check if MediaPlayer works correctly and every video was playing.

  • HLS Event Stream from Azure Blob Storage

    23 janvier 2019, par nemesis_567

    Alright, so I encode videos of around 30 seconds with ffmpeg, the following flags :

    ffmpeg.exe -i \"{filename}\"  -f hls -hls_segment_type fmp4 -hls_flags single_file -hls_time 5 -g 1 \"{outname}.m3u8\"

    This generates a single playlist with an m4s and m3u8 file :

    #EXTM3U
    
#EXT-X-VERSION:7
    
#EXT-X-TARGETDURATION:5
    
#EXT-X-MEDIA-SEQUENCE:0
    
#EXT-X-MAP:URI="1e02982a-c455-40f5-8229-1033a640c91c-0.mp4.m4s",BYTERANGE="818@0"
    
#EXTINF:4.781911,
    
#EXT-X-BYTERANGE:1398720@5953584
    
1e02982a-c455-40f5-8229-1033a640c91c-0.mp4.m4s
    
#EXTINF:5.063200,
    
#EXT-X-BYTERANGE:1490276@7352304
    
1e02982a-c455-40f5-8229-1033a640c91c-0.mp4.m4s
    
#EXTINF:5.063200,
    
#EXT-X-BYTERANGE:1484824@8842580
    
1e02982a-c455-40f5-8229-1033a640c91c-0.mp4.m4s
    
#EXTINF:5.063200,
    
#EXT-X-BYTERANGE:1468656@10327404
    
1e02982a-c455-40f5-8229-1033a640c91c-0.mp4.m4s
    
#EXTINF:1.969022,
    
#EXT-X-BYTERANGE:576408@11796060
    
1e02982a-c455-40f5-8229-1033a640c91c-0.mp4.m4s
    
#EXT-X-ENDLIST

    I take this playlist and append several others that are just the same as they come adding a DIscontinuity tag and between each of them and removing unneeded tags. While doing this I replace the filenames with a working SAS URL for the actual files.

    Which results in files of the following type :

    #EXTM3U
    
#EXT-X-PLAYLIST-TYPE:EVENT
    
#EXT-X-VERSION:7
    
#EXT-X-TARGETDURATION:10
    
#EXT-X-MEDIA-SEQUENCE:0
    
#EXT-X-INDEPENDENT-SEGMENTS
    
#EXT-X-MAP:URI="https://vsatstreams.blob.core.windows.net/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/1-frag.m4s?sv=2018-03-28&sr=b&sig=el%2F529BGb4Xjeetiv9kxaHAxGYC%2BwogSYgvCivq1tlc%3D&st=2019-01-10T05%3A09%3A13Z&se=2021-01-10T05%3A14%3A13Z&sp=rw",BYTERANGE="818@0"
    
#EXTINF:4.654771,
    
#EXT-X-BYTERANGE:1474761@4854677
    
https://vsatstreams.blob.core.windows.net/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/1-frag.m4s?sv=2018-03-28&sr=b&sig=el%2F529BGb4Xjeetiv9kxaHAxGYC%2BwogSYgvCivq1tlc%3D&st=2019-01-10T05%3A09%3A13Z&se=2021-01-10T05%3A14%3A13Z&sp=rw
    
#EXTINF:5.430566,
    
#EXT-X-BYTERANGE:1716825@6329438
    
https://vsatstreams.blob.core.windows.net/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/1-frag.m4s?sv=2018-03-28&sr=b&sig=el%2F529BGb4Xjeetiv9kxaHAxGYC%2BwogSYgvCivq1tlc%3D&st=2019-01-10T05%3A09%3A13Z&se=2021-01-10T05%3A14%3A13Z&sp=rw
    
#EXTINF:4.654771,
    
#EXT-X-BYTERANGE:1479725@8046263
    
https://vsatstreams.blob.core.windows.net/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/1-frag.m4s?sv=2018-03-28&sr=b&sig=el%2F529BGb4Xjeetiv9kxaHAxGYC%2BwogSYgvCivq1tlc%3D&st=2019-01-10T05%3A09%3A13Z&se=2021-01-10T05%3A14%3A13Z&sp=rw
    
#EXTINF:5.430566,
    
#EXT-X-BYTERANGE:1710125@9525988
    
https://vsatstreams.blob.core.windows.net/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/1-frag.m4s?sv=2018-03-28&sr=b&sig=el%2F529BGb4Xjeetiv9kxaHAxGYC%2BwogSYgvCivq1tlc%3D&st=2019-01-10T05%3A09%3A13Z&se=2021-01-10T05%3A14%3A13Z&sp=rw
    
#EXTINF:3.103181,
    
#EXT-X-BYTERANGE:200@11236113
    
https://vsatstreams.blob.core.windows.net/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/1-frag.m4s?sv=2018-03-28&sr=b&sig=el%2F529BGb4Xjeetiv9kxaHAxGYC%2BwogSYgvCivq1tlc%3D&st=2019-01-10T05%3A09%3A13Z&se=2021-01-10T05%3A14%3A13Z&sp=rw
    
#EXT-X-DISCONTINUITY
    
#EXT-X-MAP:URI="https://vsatstreams.blob.core.windows.net/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/2-frag.m4s?sv=2018-03-28&sr=b&sig=s3s3R1sjE6lZRgfmaYdOkOGCr7BYkOrygBy%2F90crwvM%3D&st=2019-01-10T05%3A09%3A53Z&se=2021-01-10T05%3A14%3A53Z&sp=rw",BYTERANGE="819@0"
    
#EXTINF:4.897959,
    
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#EXTINF:4.897959,
    
#EXT-X-BYTERANGE:1496289@7690228
    
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#EXTINF:4.897959,
    
#EXT-X-BYTERANGE:1516854@9186517
    
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#EXT-X-BYTERANGE:1492617@10703371
    
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#EXT-X-BYTERANGE:1352781@6631869
    
https://vsatstreams.blob.core.windows.net/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/75888d6c-41fb-4cb0-9573-0e2ab7a6dc4c/3-frag.m4s?sv=2018-03-28&sr=b&sig=O%2B%2FQBnVcyIzn2r3T8S7xq2dic9LKW3q7p2bGSYen%2BbI%3D&st=2019-01-10T05%3A10%3A43Z&se=2021-01-10T05%3A15%3A43Z&sp=rw
    
#EXTINF:5.000000,
    
#EXT-X-BYTERANGE:1357320@7984650
    
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#EXT-X-BYTERANGE:1360645@9341970
    
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#EXTINF:5.000000,

    Link for file is here

    This stream does not play in chrome with video.js, and only plays in bitmovin client, but it constantly fails with buffer append/stalled errors. In firefox it plays, but without much reliability.

    So what am I doing wrong in this process ? I’ve checked the specification for HLS several times, can’t see what I’m doing wrong, or what the player expects.

    Please check hls.js player, with the following URL which uses the stream above to see what I’m talking about.
    HLS.JS Demo Player With My Playlist

  • How to save multiple frames in JPG with FFMPEG using timestamp

    13 janvier 2019, par user3228278

    I’m trying to save JPG files from a UDP stream using FFMPEG.

    I want the filenames to be timestamp like YYYY-MM-DD_HH-MM-SS_MMM.jpg, but it seems that milliseconds not are supported by FFMPEG. I need a unique number after the second to be able to save multiple frames per second.

    ffmpeg -i udp://@239.255.37.1:18888 -f image2 -vf fps=1 -strftime 1 "R:\Recordings\Images\Stream1\%Y-%m-%d_%H-%M-%S.jpg"

    I expect the files to be like this :
    2019-01-13_01-58-15_100.jpg, 2019-01-13_01-58-15_600.jpg

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