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• Revision a3c5a79426 : Clean up full-pixel search calling code Removed repetitive code. Change-Id : Ib

  6 mai 2014, par Yunqing Wang

  Changed Paths :
   Modify /vp9/encoder/vp9_pickmode.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
   Modify /vp9/encoder/vp9_rdopt.h

  
  
  Clean up full-pixel search calling code

  Removed repetitive code.

  Change-Id : Ib6adb6eaf7d4e3feeabb71651f4cc447974a925d

• "does not contain any stream" if "EXT-X-MEDIA-SEQUENCE" > 0

  6 mars 2019, par Wonson

  I have a list of .ts files and want to save them as multiple video files.

  ---

  First I have a .m3u8 like this obtained from streaming :

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:5
  
  #EXT-X-MEDIA-SEQUENCE:0
  
  #EXT-X-KEY:METHOD=AES-128,URI="aaa001_00001.key"
  
  #EXTINF:3.01,
  
  aaa001_00002.ts
  
  #EXTINF:3.01,
  
  aaa001_00003.ts
  
  
  
  ...
  
  
  
  #EXTINF:3.01,
  
  aaa001_01944.ts
  
  #EXT-X-ENDLIST

  ---

  Step 1 :

  So, I tried to convert it into several m3u8 like the followings :

  segment1.m3u8

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:5
  
  #EXT-X-MEDIA-SEQUENCE:0
  
  #EXT-X-KEY:METHOD=AES-128,URI="aaa001_00001.key"
  
  #EXTINF:3.01,
  
  aaa001_00002.ts
  
  #EXTINF:3.01,
  
  aaa001_00003.ts
  
  
  
  ...
  
  
  
  #EXTINF:3.01,
  
  aaa001_00569.ts
  
  #EXT-X-ENDLIST

  segment2.m3u8

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:5
  
  #EXT-X-MEDIA-SEQUENCE:567
  
  #EXT-X-KEY:METHOD=AES-128,URI="aaa001_00001.key"
  
  #EXTINF:3.01,
  
  aaa001_00002.ts
  
  #EXTINF:3.01,
  
  aaa001_00003.ts
  
  
  
  ...
  
  
  
  #EXTINF:3.01,
  
  aaa001_01288.ts
  
  #EXT-X-ENDLIST

  and so on...

  then do the ffmpeg cmd one by one..

  ffmpeg -i /fs/segment2.m3u8 -safe 0 -map 0:v -map 0:a -cpu-used 4 -threads 0 -preset veryfast -c copy -bsf:a aac_adtstoasc output.mp4

  ---

  But those EXT-X-MEDIA-SEQUENCE > 0 (i.e. since segment2.m3u8...) will result in

  "Output file #0 does not contain any stream"

  ---

  Then I tried to make the ’segment2.m3u8’ looks like this

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:5
  
  #EXT-X-MEDIA-SEQUENCE:0
  
  #EXT-X-KEY:METHOD=AES-128,URI="aaa001_00001.key"
  
  #EXTINF:3.01,
  
  aaa001_00002.ts <--the first video chunk
  
  #EXTINF:3.01,
  
  aaa001_00570.ts <--the start point of segment 2
  
  #EXTINF:3.01,
  
  aaa001_00571.ts
  
  
  
  ...
  
  
  
  #EXTINF:3.01,
  
  aaa001_01288.ts
  
  #EXT-X-ENDLIST

  ---

  ffmpeg works fine, and gives me an output video, so it seems the stream channel info is in the first chunk.

  However, there are still several problems

  1. the first chunk of video is in segment2.mp4 which I clearly do not want it here.

  2. the segment2 output video plays first the 3.01s, then freezed the image until the time reach aaa001_00570.ts and play again

  ---

  So, any suggestion so that I can reference the stream info from first chunk ? or ignore it in the playlist, etc ?

  ---

  UPDATE SOLUTION

  As it works when #EXT-X-MEDIA-SEQUENCE:0, and #EXT-X-KEY : IV = by default

  So I add IV=hex(#EXT-X-MEDIA-SEQUENCE)in every playlist

  segment1.m3u8

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:5
  
  #EXT-X-MEDIA-SEQUENCE:0
  
  #EXT-X-KEY:METHOD=AES-128,URI="aaa001_00001.key",IV=0x00000000000000000000000000000000
  
  #EXTINF:3.01,
  
  aaa001_00002.ts
  
  #EXTINF:3.01,
  
  aaa001_00003.ts
  
  
  
  ...
  
  
  
  #EXTINF:3.01,
  
  aaa001_00569.ts
  
  #EXT-X-ENDLIST

  segment2.m3u8

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-TARGETDURATION:5
  
  #EXT-X-MEDIA-SEQUENCE:567
  
  #EXT-X-KEY:METHOD=AES-128,URI="aaa001_00001.key",IV=0x00000000000000000000000000000237
  
  #EXTINF:3.01,
  
  aaa001_00570.ts
  
  
  
  ...
  
  
  
  #EXTINF:3.01,
  
  aaa001_01288.ts
  
  #EXT-X-ENDLIST

• Media-players show longest duration of multi-track MP4 files from FFmpeg [closed]

  9 juillet 2024, par EasonWaii

  I need to merge two videos into one using ffmpeg. The resulting video should have two video tracks and one audio track, with the audio track taken from the longer video.

  


  When playing the merged video in a player like PotPlayer or VLC, it should default to playing the shorter video track. However, users should be able to switch to the other video track if they want.

  


  The problem I am facing :
Everything is working fine, except when the player defaults to the shorter video track, it shows the timeline of the longer video track.

  


   built with Apple clang version 15.0.0 (clang-1500.3.9.4)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/7.0.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox
  libavutil      59.  8.100 / 59.  8.100
  libavcodec     61.  3.100 / 61.  3.100
  libavformat    61.  1.100 / 61.  1.100
  libavdevice    61.  1.100 / 61.  1.100
  libavfilter    10.  1.100 / 10.  1.100
  libswscale      8.  1.100 /  8.  1.100
  libswresample   5.  1.100 /  5.  1.100
  libpostproc    58.  1.100 / 58.  1.100
{
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output21.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf59.16.100
  Duration: 00:00:12.84, start: 0.000000, bitrate: 2207 kb/s
  Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, progressive), 720x1280 [SAR 1:1 DAR 9:16], 1052 kb/s, 30 fps, 30 tbr, 15360 tbn
      Metadata:
        handler_name    : VideoHandler
        vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 720x1280, 1293 kb/s, 29.83 fps, 29.83 tbr, 11456 tbn (default)
      Metadata:
        handler_name    : ?Mainconcept Video Media Handler
        vendor_id       : [0][0][0][0]
  Stream #0:2[0x3](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 130 kb/s (default)
      Metadata:
        handler_name    : SoundHandler
        vendor_id       : [0][0][0][0]
    "streams": [
        {
            "index": 0,
            "codec_name": "hevc",
            "codec_long_name": "H.265 / HEVC (High Efficiency Video Coding)",
            "profile": "Main",
            "codec_type": "video",
            "codec_tag_string": "hev1",
            "codec_tag": "0x31766568",
            "width": 720,
            "height": 1280,
            "coded_width": 720,
            "coded_height": 1280,
            "closed_captions": 0,
            "film_grain": 0,
            "has_b_frames": 2,
            "sample_aspect_ratio": "1:1",
            "display_aspect_ratio": "9:16",
            "pix_fmt": "yuv420p",
            "level": 93,
            "color_range": "tv",
            "chroma_location": "left",
            "field_order": "progressive",
            "refs": 1,
            "id": "0x1",
            "r_frame_rate": "30/1",
            "avg_frame_rate": "30/1",
            "time_base": "1/15360",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 196096,
            "duration": "12.766667",
            "bit_rate": "1052926",
            "nb_frames": "383",
            "extradata_size": 2480,
            "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,
                "timed_thumbnails": 0,
                "non_diegetic": 0,
                "captions": 0,
                "descriptions": 0,
                "metadata": 0,
                "dependent": 0,
                "still_image": 0
            },
            "tags": {
                "language": "und",
                "handler_name": "VideoHandler",
                "vendor_id": "[0][0][0][0]"
            }
        },
        {
            "index": 1,
            "codec_name": "h264",
            "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
            "profile": "High",
            "codec_type": "video",
            "codec_tag_string": "avc1",
            "codec_tag": "0x31637661",
            "width": 720,
            "height": 1280,
            "coded_width": 720,
            "coded_height": 1280,
            "closed_captions": 0,
            "film_grain": 0,
            "has_b_frames": 2,
            "pix_fmt": "yuv420p",
            "level": 31,
            "color_range": "tv",
            "color_space": "bt709",
            "color_transfer": "bt709",
            "color_primaries": "bt709",
            "chroma_location": "left",
            "field_order": "progressive",
            "refs": 1,
            "is_avc": "true",
            "nal_length_size": "4",
            "id": "0x2",
            "r_frame_rate": "179/6",
            "avg_frame_rate": "3448256/115597",
            "time_base": "1/11456",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 115597,
            "duration": "10.090520",
            "bit_rate": "1293284",
            "bits_per_raw_sample": "8",
            "nb_frames": "301",
            "extradata_size": 46,
            "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,
                "non_diegetic": 0,
                "captions": 0,
                "descriptions": 0,
                "metadata": 0,
                "dependent": 0,
                "still_image": 0
            },
            "tags": {
                "language": "eng",
                "handler_name": "\u001fMainconcept Video Media Handler",
                "vendor_id": "[0][0][0][0]"
            }
        },
        {
            "index": 2,
            "codec_name": "aac",
            "codec_long_name": "AAC (Advanced Audio Coding)",
            "profile": "LC",
            "codec_type": "audio",
            "codec_tag_string": "mp4a",
            "codec_tag": "0x6134706d",
            "sample_fmt": "fltp",
            "sample_rate": "44100",
            "channels": 2,
            "channel_layout": "stereo",
            "bits_per_sample": 0,
            "initial_padding": 0,
            "id": "0x3",
            "r_frame_rate": "0/0",
            "avg_frame_rate": "0/0",
            "time_base": "1/44100",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 566244,
            "duration": "12.840000",
            "bit_rate": "130447",
            "nb_frames": "554",
            "extradata_size": 5,
            "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,
                "non_diegetic": 0,
                "captions": 0,
                "descriptions": 0,
                "metadata": 0,
                "dependent": 0,
                "still_image": 0
            },
            "tags": {
                "language": "und",
                "handler_name": "SoundHandler",
                "vendor_id": "[0][0][0][0]"
            }
        }
    ],
    "format": {
        "filename": "output21.mp4",
        "nb_streams": 3,
        "nb_programs": 0,
        "nb_stream_groups": 0,
        "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
        "format_long_name": "QuickTime / MOV",
        "start_time": "0.000000",
        "duration": "12.840000",
        "size": "3543155",
        "bit_rate": "2207573",
        "probe_score": 100,
        "tags": {
            "major_brand": "isom",
            "minor_version": "512",
            "compatible_brands": "isomiso2avc1mp41",
            "encoder": "Lavf59.16.100"
        }
    }
}



  


  I want the timeline to display correctly according to the shorter video track when it is being played, without truncating the timeline of the longer video track and affecting its playback.