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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
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Sur d’autres sites (9477)
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FFmpeg wrong codecstring for DASH manifest [closed]
21 novembre 2024, par SuxsemI'm trying to create a DASH stream with ffmpeg with the following command :


ffmpeg -i rtsp://admin:***@camera-retro.lan/ch0_0 ^
 -map 0 ^
 -codec:v copy ^
 -codec:a copy ^
 -f dash ^
 -use_template 1 ^
 -use_timeline 1 ^
 -window_size 50 ^
 -extra_window_size 5 ^
 -seg_duration 5 ^
 tmp/output.mpd


The problem is the generated manifest doesn't contain a valid codecstring for the video part (note the codecs="hev1" part) and thus is not playable by the browser :


<?xml version="1.0" encoding="utf-8"?>
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="dynamic" minimumupdateperiod="PT6S" suggestedpresentationdelay="PT6S" availabilitystarttime="2024-11-21T12:05:52.604Z" publishtime="2024-11-21T12:05:57.559Z" timeshiftbufferdepth="PT5M1.9S" maxsegmentduration="PT5.0S" minbuffertime="PT12.0S">
 <programinformation>
 
 </programinformation>
 <servicedescription>
 </servicedescription>
 <period start="PT0.0S">
 <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" maxwidth="2304" maxheight="1296" par="16:9">
 <representation mimetype="video/mp4" codecs="hev1" bandwidth="822093" width="2304" height="1296" scantype="unknown" sar="1:1">
 <segmenttemplate timescale="90000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
 <segmenttimeline>
 <s t="0" d="542990"></s>
 </segmenttimeline>
 </segmenttemplate>
 </representation>
 </adaptationset>
 <adaptationset contenttype="audio" startwithsap="1" segmentalignment="true" bitstreamswitching="true">
 <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="34143" audiosamplingrate="16000">
 <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="1"></audiochannelconfiguration>
 <segmenttemplate timescale="16000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
 <segmenttimeline>
 <s t="0" d="81001"></s>
 </segmenttimeline>
 </segmenttemplate>
 </representation>
 </adaptationset>
 </period>
</mpd>


This is the output of ffprobe :


SDP:
v=0
o=- 1732188474342789 1 IN IP4 192.168.12.162
s=Session streamed by "rRTSPServer"
i=ch0_0.h264
t=0 0
a=tool:LIVE555 Streaming Media v2023.01.19
a=type:broadcast
a=control:*
a=range:npt=now-
a=x-qt-text-nam:Session streamed by "rRTSPServer"
a=x-qt-text-inf:ch0_0.h264
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
b=AS:700
a=rtpmap:96 H265/90000
a=fmtp:96 profile-space=0;profile-id=1;tier-flag=0;level-id=186;interop-constraints=000000000000;sprop-vps=QAEMAf//AWAAAAMAAAMAAAMAAAMAuqwJ;sprop-sps=QgEBAWAAAAMAAAMAAAMAAAMAuqABICAFEf5a7kSIi/Lc1AQEBAI=;sprop-pps=RAHA8oSJAzJA
a=control:track1
m=audio 0 RTP/AVP 97
c=IN IP4 0.0.0.0
b=AS:32
a=rtpmap:97 MPEG4-GENERIC/16000
a=fmtp:97 streamtype=5;profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength=3;config=1408
a=control:track2


it seems to me that all codec informations are present :


a=fmtp:96 profile-space=0;profile-id=1;tier-flag=0;level-id=186;interop-constraints=000000000000;


why ffmpeg is putting only codecs="hev1" instead of the full codecstring (containing the profile, the level and the constraints) ?


Thank you


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avformat/Makefile : Remove false dependency of WebM DASH manifest muxer
7 avril 2020, par Andreas Rheinhardt -
MPEG DASH (MPD) to MP4 in Node.js ?
28 janvier 2024, par Hello WorldI am trying to convert streams to .mp4 files. I have successfully converted an HLS to MP4 using
fluent-ffmpegpackage on version 2.1.2. I did so with with the following code :

var ffmpegCommand = ffmpeg();
 ffmpegCommand
 .input(HLS FILE HERE)
 .inputOptions('-protocol_whitelist file,http,https,tcp,tls,crypto,data')
 .on("error", (err, stdout, stderr) => {
 console.log(err)
 let error = new Error(err.message)
 error.code = err.code || 'FILE_CONVERSION_M3U8_TO_MP3/UNKNOWN_ERROR';
 error.status = err.status || 500;

 console.log('An error occurred: ' + err.message, err, stderr);
 reject(error)
 })
 .on("end", () => {
 console.log(temporaryFilePath2)
 resolve(temporaryFilePath2);
 })
 .on('progress', function(progress) {
 console.log('progress: ' + (progress.percent || 0).toFixed(2) + '%。');
 progressGathering.push((progress.percent || 0).toFixed(2))

 if(progressGathering.length == 10 && progressGathering[9] == 0.00){
 let error = new Error("File is a live stream.")
 error.code = 'FILE_CONVERSION_M3U8_TO_MP3/LIVESTREAM_SUPPORT'
 error.status = 501

 ffmpegCommand.kill()
 reject(error)
 }
 })
 .inputOptions('-allowed_extensions ALL')
 .outputOptions("-c copy")
 .output(temporaryFilePath2)
 .run();

 setTimeout(() => {
 ffmpegCommand.kill();
 let error = new Error("The file selected was too large or the network was hanging. Conversion timeout.")
 error.code = 'FILE_CONVERSION_M3U8_TO_MP3/TIMEOUT'
 error.status = 599;
 reject(error)
 }, 300000) // 5 minutes


However, when I attempt something similar with a mpd file url in the input, I get several errors that are all the same :


ffmpeg exited with code 1: https://dash.akamaized.net/akamai/bbb_30fps/bbb_30fps.mpd: Invalid data found when processing input

Is this something fluent-ffmpeg can't handle ? If so, I would like to know another package that can accomplish this.


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