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26 septembre 2011, par
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Type : Audio
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Mis à jour : Avril 2013
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WebM live streaming via DASH
4 juin 2018, par ewackI am following the instructions here to try to make WebM live streaming via DASH. My input is from an Axis camera and it is streaming as h264 encoding. I am using node to spin up the ffmpeg processes. I am able to create the .hdr file and the .chk files. The .mpd file is even created but it’s empty and I get an error saying :
Could not write header for output file #0 (incorrect codec parameters ?): Operation not permittedStream mapping: Stream #0:0 -> #0:0 (copy)Here’s all of my code :
var express = require('express');
spawn = require('child_process').spawn;
var app = express();
app.use(express.static(__dirname + '/public'));
app.listen(8080);
console.log("Running on Port 8080");
var ffmpeg1 = spawn('ffmpeg', [
'-y',
//video
'-i', 'rtsp://admin:password@192.168.1.54:554/axis-media/media.amp?videocodec=h264&resolution=1280x720',
'-map', '0:0',
'-pix_fmt', 'yuv420p',
'-color_range', '2',
'-c:v', 'libvpx-vp9',
'-s', '1280x720',
'-keyint_min', '25',
'-g', '25',
// //VP9_LIVE_PARAMS
'-speed', '6',
'-tile-columns', '4',
'-frame-parallel', '1',
'-threads', '8',
'-static-thresh', '0',
'-max-intra-rate', '300',
'-deadline', 'realtime',
'-lag-in-frames', '0',
'-error-resilient', '1',
'-f', 'webm_chunk',
'-header', 'public/glass_360.hdr',
'-chunk_start_index', '1',
'public/glass_360_%d.chk',
]);
setTimeout(()=> {
var ffmpeg2 = spawn('ffmpeg', [
'-y',
'-f', 'webm_dash_manifest',
'-live', '1',
'-i', 'public/glass_360.hdr',
'-c', 'copy',
'-map', '0',
'-r', '25',
'-framerate', '25',
'-f', 'webm_dash_manifest',
'-live', '1',
'-adaptation_sets', '"id=0,streams=0"',
'-chunk_start_index', '1',
'-chunk_duration_ms', '2000',
'-time_shift_buffer_depth', '7200',
'-minimum_update_period', '7200',
'public/glass_live_manifest.mpd'
]);
ffmpeg2.stdout.on('data',
function (data) {
console.log('ff2std: ' + data);
}
);
ffmpeg2.stderr.on('data',
function (data) {
console.log('ff2err: ' + data);
}
);
}, 5000);
ffmpeg1.stdout.on('data',
function (data) {
console.log('ff1std: ' + data);
}
);
ffmpeg1.stderr.on('data',
function (data) {
console.log('ff1err: ' + data);
}
);Here is all of my output :
Running on Port 8080
ff1err: ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
ff1err: libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
ff1err: Input #0, rtsp, from 'rtsp://admin:password@192.168.1.54:554/axis-media/media.amp?videocodec=h264&resolution=1280x720':
Metadata:
title : Session streamed with GStreamer
comment : rtsp-server
Duration: N/A, start: 0.033344
ff1err: , bitrate: N/A
Stream #0:0: Video: h264 (Main), yuvj420p(pc, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 180k tbc
ff1err: [swscaler @ 0x7f8df281bc00] deprecated pixel format used, make sure you did set range correctly
ff1err: [libvpx-vp9 @ 0x7f8df2800600] v1.6.1
ff1err: Output #0, webm_chunk, to 'public/glass_360_%d.chk':
Metadata:
title : Session streamed with GStreamer
comment : rtsp-server
encoder : Lavf57.56.101
ff1err: Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p(pc), 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 200 kb/s, 25 fps, 1k tbn, 25 tbc
Metadata:
encoder : Lavc57.64.101 libvpx-vp9
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> vp9 (libvpx-vp9))
Press [q] to stop, [?] for help
ff1err: frame= 10 fps=0.0 q=0.0 size=N/A time=00:00:00.36 bitrate=N/A speed=0.71x
ff1err: frame= 25 fps= 25 q=0.0 size=N/A time=00:00:00.96 bitrate=N/A speed=0.946x
ff1err: frame= 40 fps= 26 q=0.0 size=N/A time=00:00:01.56 bitrate=N/A speed=1.03x
ff1err: frame= 55 fps= 27 q=0.0 size=N/A time=00:00:02.16 bitrate=N/A speed=1.07x
ff1err: frame= 70 fps= 28 q=0.0 size=N/A time=00:00:02.76 bitrate=N/A speed=1.09x
ff1err: frame= 85 fps= 28 q=0.0 size=N/A time=00:00:03.36 bitrate=N/A speed=1.11x
ff2err: ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
ff2err: libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
ff2err: [webm_dash_manifest @ 0x7fbc5b80b400] Could not find codec parameters for stream 0 (Video: vp9, none, 1280x720): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
ff2err: Input #0, webm_dash_manifest, from 'public/glass_360.hdr':
Metadata:
title : Session streamed with GStreamer
encoder : Lavf57.56.101
Duration: N/A, bitrate: N/A
Stream #0:0: Video: vp9, none, 1280x720
ff2err: , SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
Metadata:
webm_dash_manifest_file_name: glass_360.hdr
webm_dash_manifest_track_number: 1
ff2err: Could not write header for output file #0 (incorrect codec parameters ?): Operation not permittedStream mapping:
Stream #0:0 -> #0:0 (copy)
ff2err: Last message repeated 1 times
ff1err: frame= 101 fps= 29 q=0.0 size=N/A time=00:00:04.00 bitrate=N/A speed=1.13x
ff1err: frame= 116 fps= 29 q=0.0 size=N/A time=00:00:04.60 bitrate=N/A speed=1.14x
ff1err: frame= 131 fps= 29 q=0.0 size=N/A time=00:00:05.20 bitrate=N/A speed=1.15x
ff1err: frame= 146 fps= 29 q=0.0 size=N/A time=00:00:05.80 bitrate=N/A speed=1.15x
ff1err: frame= 161 fps= 29 q=0.0 size=N/A time=00:00:06.40 bitrate=N/A speed=1.15x
ff1err: frame= 177 fps= 29 q=0.0 size=N/A time=00:00:07.04 bitrate=N/A speed=1.16x
ff1err: frame= 192 fps= 29 q=0.0 size=N/A time=00:00:07.64 bitrate=N/A speed=1.16x
ff1err: frame= 207 fps= 29 q=0.0 size=N/A time=00:00:08.24 bitrate=N/A speed=1.16x
ff1err: frame= 222 fps= 29 q=0.0 size=N/A time=00:00:08.84 bitrate=N/A speed=1.17x
ff1err: frame= 237 fps= 29 q=0.0 size=N/A time=00:00:09.44 bitrate=N/A speed=1.17x
ff1err: frame= 252 fps= 29 q=0.0 size=N/A time=00:00:10.04 bitrate=N/A speed=1.17xWhy is ffmpeg creating an empty .mpd file ?
-
Do I need multiple video files in different resolutions to use MPEG DASH ?
2 février 2023, par Gentil AlysonI'm trying to use Django REST Framework to serve .mpd files. When the user uploads a video, the server creates the MPD and the chunk files. However, I can't seem to able to make it work. I've tried using python-ffmpeg-video-streaming, but the client which is using dash.js to play the video will get only one bitrate (480p). I've also tried running this command
'ffmpeg -i {self.file.path} -map 0 -map 0 -c:a aac -c:v libx264 -b:v:0 800k -b:v:1 300k -var_stream_map "v:0,name:800k v:1,name:300k" -f dash -dash_segment_type mp4 -single_file 1 {file_dir}/dash.mpd'usingos.systemfrom Python, but then the player gets stuck at buffering.



<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT2M30.5S" maxsegmentduration="PT5.0S" minbuffertime="PT16.6S">
 <programinformation>
 </programinformation>
 <servicedescription>
 </servicedescription>
 <period start="PT0.0S">
 <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" framerate="30000/1001" maxwidth="1280" maxheight="720" par="16:9" lang="und">
 <representation mimetype="video/mp4" codecs="avc1.64001f" bandwidth="800000" width="1280" height="720" sar="1:1">
 <baseurl>dash-stream0.mp4</baseurl>
 <segmentlist timescale="1000000" duration="5000000" startnumber="1">
 <initialization range="0-854"></initialization>
 <segmenturl mediarange="855-190364" indexrange="855-906"></segmenturl>
 <segmenturl mediarange="190365-448322" indexrange="190365-190416"></segmenturl>
 <segmenturl mediarange="448323-628609" indexrange="448323-448374"></segmenturl>
 <segmenturl mediarange="628610-741660" indexrange="628610-628661"></segmenturl>
 <segmenturl mediarange="741661-1149015" indexrange="741661-741712"></segmenturl>
 <segmenturl mediarange="1149016-1761260" indexrange="1149016-1149067"></segmenturl>
 <segmenturl mediarange="1761261-1829636" indexrange="1761261-1761312"></segmenturl>
 <segmenturl mediarange="1829637-2343368" indexrange="1829637-1829688"></segmenturl>
 <segmenturl mediarange="2343369-2759155" indexrange="2343369-2343420"></segmenturl>
 <segmenturl mediarange="2759156-3120911" indexrange="2759156-2759207"></segmenturl>
 <segmenturl mediarange="3120912-3255416" indexrange="3120912-3120963"></segmenturl>
 <segmenturl mediarange="3255417-3617692" indexrange="3255417-3255468"></segmenturl>
 <segmenturl mediarange="3617693-3910773" indexrange="3617693-3617744"></segmenturl>
 <segmenturl mediarange="3910774-4097693" indexrange="3910774-3910825"></segmenturl>
 <segmenturl mediarange="4097694-4266685" indexrange="4097694-4097745"></segmenturl>
 <segmenturl mediarange="4266686-4609479" indexrange="4266686-4266737"></segmenturl>
 <segmenturl mediarange="4609480-4719699" indexrange="4609480-4609531"></segmenturl>
 <segmenturl mediarange="4719700-4833193" indexrange="4719700-4719751"></segmenturl>
 <segmenturl mediarange="4833194-4905000" indexrange="4833194-4833245"></segmenturl>
 <segmenturl mediarange="4905001-5046627" indexrange="4905001-4905052"></segmenturl>
 </segmentlist>
 </representation>
 </adaptationset>
 <adaptationset contenttype="audio" startwithsap="1" segmentalignment="true" bitstreamswitching="true" lang="eng">
 <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="128000" audiosamplingrate="44100">
 <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
 <baseurl>dash-stream1.mp4</baseurl>
 <segmentlist timescale="1000000" duration="5000000" startnumber="1">
 <initialization range="0-764"></initialization>
 <segmenturl mediarange="765-82409" indexrange="765-816"></segmenturl>
 <segmenturl mediarange="82410-163592" indexrange="82410-82461"></segmenturl>
 <segmenturl mediarange="163593-244493" indexrange="163593-163644"></segmenturl>
 <segmenturl mediarange="244494-325181" indexrange="244494-244545"></segmenturl>
 <segmenturl mediarange="325182-406218" indexrange="325182-325233"></segmenturl>
 <segmenturl mediarange="406219-487174" indexrange="406219-406270"></segmenturl>
 <segmenturl mediarange="487175-568100" indexrange="487175-487226"></segmenturl>
 <segmenturl mediarange="568101-649853" indexrange="568101-568152"></segmenturl>
 <segmenturl mediarange="649854-732519" indexrange="649854-649905"></segmenturl>
 <segmenturl mediarange="732520-813751" indexrange="732520-732571"></segmenturl>
 <segmenturl mediarange="813752-895429" indexrange="813752-813803"></segmenturl>
 <segmenturl mediarange="895430-976537" indexrange="895430-895481"></segmenturl>
 <segmenturl mediarange="976538-1058579" indexrange="976538-976589"></segmenturl>
 <segmenturl mediarange="1058580-1139556" indexrange="1058580-1058631"></segmenturl>
 <segmenturl mediarange="1139557-1220802" indexrange="1139557-1139608"></segmenturl>
 <segmenturl mediarange="1220803-1301723" indexrange="1220803-1220854"></segmenturl>
 <segmenturl mediarange="1301724-1382546" indexrange="1301724-1301775"></segmenturl>
 <segmenturl mediarange="1382547-1464086" indexrange="1382547-1382598"></segmenturl>
 <segmenturl mediarange="1464087-1546573" indexrange="1464087-1464138"></segmenturl>
 <segmenturl mediarange="1546574-1627881" indexrange="1546574-1546625"></segmenturl>
 <segmenturl mediarange="1627882-1710185" indexrange="1627882-1627933"></segmenturl>
 <segmenturl mediarange="1710186-1791593" indexrange="1710186-1710237"></segmenturl>
 <segmenturl mediarange="1791594-1872889" indexrange="1791594-1791645"></segmenturl>
 <segmenturl mediarange="1872890-1954238" indexrange="1872890-1872941"></segmenturl>
 <segmenturl mediarange="1954239-2036069" indexrange="1954239-1954290"></segmenturl>
 <segmenturl mediarange="2036070-2117365" indexrange="2036070-2036121"></segmenturl>
 <segmenturl mediarange="2117366-2198435" indexrange="2117366-2117417"></segmenturl>
 <segmenturl mediarange="2198436-2279764" indexrange="2198436-2198487"></segmenturl>
 <segmenturl mediarange="2279765-2362061" indexrange="2279765-2279816"></segmenturl>
 <segmenturl mediarange="2362062-2443751" indexrange="2362062-2362113"></segmenturl>
 <segmenturl mediarange="2443752-2446358" indexrange="2443752-2443803"></segmenturl>
 </segmentlist>
 </representation>
 </adaptationset>
 <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" framerate="30000/1001" maxwidth="1280" maxheight="720" par="16:9" lang="und">
 <representation mimetype="video/mp4" codecs="avc1.64001f" bandwidth="300000" width="1280" height="720" sar="1:1">
 <baseurl>dash-stream2.mp4</baseurl>
 <segmentlist timescale="1000000" duration="5000000" startnumber="1">
 <initialization range="0-854"></initialization>
 <segmenturl mediarange="855-117134" indexrange="855-906"></segmenturl>
 <segmenturl mediarange="117135-288087" indexrange="117135-117186"></segmenturl>
 <segmenturl mediarange="288088-435178" indexrange="288088-288139"></segmenturl>
 <segmenturl mediarange="435179-520309" indexrange="435179-435230"></segmenturl>
 <segmenturl mediarange="520310-903223" indexrange="520310-520361"></segmenturl>
 <segmenturl mediarange="903224-1458808" indexrange="903224-903275"></segmenturl>
 <segmenturl mediarange="1458809-1524956" indexrange="1458809-1458860"></segmenturl>
 <segmenturl mediarange="1524957-2026894" indexrange="1524957-1525008"></segmenturl>
 <segmenturl mediarange="2026895-2406246" indexrange="2026895-2026946"></segmenturl>
 <segmenturl mediarange="2406247-2726266" indexrange="2406247-2406298"></segmenturl>
 <segmenturl mediarange="2726267-2852806" indexrange="2726267-2726318"></segmenturl>
 <segmenturl mediarange="2852807-3183174" indexrange="2852807-2852858"></segmenturl>
 <segmenturl mediarange="3183175-3467272" indexrange="3183175-3183226"></segmenturl>
 <segmenturl mediarange="3467273-3653219" indexrange="3467273-3467324"></segmenturl>
 <segmenturl mediarange="3653220-3821184" indexrange="3653220-3653271"></segmenturl>
 <segmenturl mediarange="3821185-4162978" indexrange="3821185-3821236"></segmenturl>
 <segmenturl mediarange="4162979-4273050" indexrange="4162979-4163030"></segmenturl>
 <segmenturl mediarange="4273051-4386223" indexrange="4273051-4273102"></segmenturl>
 <segmenturl mediarange="4386224-4458425" indexrange="4386224-4386275"></segmenturl>
 <segmenturl mediarange="4458426-4597502" indexrange="4458426-4458477"></segmenturl>
 </segmentlist>
 </representation>
 </adaptationset>
 <adaptationset contenttype="audio" startwithsap="1" segmentalignment="true" bitstreamswitching="true" lang="eng">
 <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="128000" audiosamplingrate="44100">
 <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
 <baseurl>dash-stream3.mp4</baseurl>
 <segmentlist timescale="1000000" duration="5000000" startnumber="1">
 <initialization range="0-764"></initialization>
 <segmenturl mediarange="765-82409" indexrange="765-816"></segmenturl>
 <segmenturl mediarange="82410-163592" indexrange="82410-82461"></segmenturl>
 <segmenturl mediarange="163593-244493" indexrange="163593-163644"></segmenturl>
 <segmenturl mediarange="244494-325181" indexrange="244494-244545"></segmenturl>
 <segmenturl mediarange="325182-406218" indexrange="325182-325233"></segmenturl>
 <segmenturl mediarange="406219-487174" indexrange="406219-406270"></segmenturl>
 <segmenturl mediarange="487175-568100" indexrange="487175-487226"></segmenturl>
 <segmenturl mediarange="568101-649853" indexrange="568101-568152"></segmenturl>
 <segmenturl mediarange="649854-732519" indexrange="649854-649905"></segmenturl>
 <segmenturl mediarange="732520-813751" indexrange="732520-732571"></segmenturl>
 <segmenturl mediarange="813752-895429" indexrange="813752-813803"></segmenturl>
 <segmenturl mediarange="895430-976537" indexrange="895430-895481"></segmenturl>
 <segmenturl mediarange="976538-1058579" indexrange="976538-976589"></segmenturl>
 <segmenturl mediarange="1058580-1139556" indexrange="1058580-1058631"></segmenturl>
 <segmenturl mediarange="1139557-1220802" indexrange="1139557-1139608"></segmenturl>
 <segmenturl mediarange="1220803-1301723" indexrange="1220803-1220854"></segmenturl>
 <segmenturl mediarange="1301724-1382546" indexrange="1301724-1301775"></segmenturl>
 <segmenturl mediarange="1382547-1464086" indexrange="1382547-1382598"></segmenturl>
 <segmenturl mediarange="1464087-1546573" indexrange="1464087-1464138"></segmenturl>
 <segmenturl mediarange="1546574-1627881" indexrange="1546574-1546625"></segmenturl>
 <segmenturl mediarange="1627882-1710185" indexrange="1627882-1627933"></segmenturl>
 <segmenturl mediarange="1710186-1791593" indexrange="1710186-1710237"></segmenturl>
 <segmenturl mediarange="1791594-1872889" indexrange="1791594-1791645"></segmenturl>
 <segmenturl mediarange="1872890-1954238" indexrange="1872890-1872941"></segmenturl>
 <segmenturl mediarange="1954239-2036069" indexrange="1954239-1954290"></segmenturl>
 <segmenturl mediarange="2036070-2117365" indexrange="2036070-2036121"></segmenturl>
 <segmenturl mediarange="2117366-2198435" indexrange="2117366-2117417"></segmenturl>
 <segmenturl mediarange="2198436-2279764" indexrange="2198436-2198487"></segmenturl>
 <segmenturl mediarange="2279765-2362061" indexrange="2279765-2279816"></segmenturl>
 <segmenturl mediarange="2362062-2443751" indexrange="2362062-2362113"></segmenturl>
 <segmenturl mediarange="2443752-2446358" indexrange="2443752-2443803"></segmenturl>
 </segmentlist>
 </representation>
 </adaptationset>
 </period>
</mpd>




<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT5M24.4S" maxsegmentduration="PT5.0S" minbuffertime="PT10.8S">
 <programinformation>
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 <servicedescription>
 </servicedescription>
 <period start="PT0.0S">
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 <representation mimetype="video/mp4" codecs="avc1.64001f" bandwidth="750000" width="854" height="480" sar="1280:1281">
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 </representation>
 </adaptationset>
 </period>
</mpd>


Do I really need multiple video files in different resolutions ? If not, then how would I go about making the necessary files ? Thanks in advance !


-
How do I create a MPEG-DASH video stream file with a MP4 file
17 août 2021, par IllepI have
FFMPEGinstalled, and I need to create aMPDfile from aMP4file. Can someone please help me out here ?

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