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• How can I efficient process a video on a per-request basis ?

  18 décembre 2015, par mipadi

  I’m working on a web application in which a watermark must be applied to a video before it is sent to the user. Currently this watermark is static, and is created using ffmpeg when a video is updated. However, the application is changing so that a unique watermark will be added to the video for every request made for the video. This prevents a problem, as the video files may be fairly large and adding a watermark may be time-consuming (e.g., in some cases it may take over a minute to add a watermark), but the watermarks cannot be added on upload.

  I figured that streaming video could be a solution and implemented a solution using the nginx-rtmp-module, but several problems cropped up :

  1. RTMP solutions are a no-go as they appear to require Flash. This application must be supported on devices that don’t support Flash at all, or don’t (and won’t) have it installed.
  2. I have considered using MPEG-DASH, but that enjoys only limited support. Namely, it is not supported on versions of Firefox targeted by the application, nor is it supported on iOS or some versions of Safari.
  3. I have considered HLS, but that enjoys even more limited support than MPEG-DASH.
  4. Regardless, I haven’t actually been able to get Dash.js (the reference player for MPEG-DASH streams) to work, although that may be due to an encoding issue, I’m not sure.

  I wondered if there is a better (perhaps simpler) solution to this problem ; perhaps streaming video isn’t the way to go at all ? Is there an efficient way to transcode a video file on-the-fly and start sending it to the browser quickly ?

  I am not against using solutions like node.js or other platforms/frameworks, and solutions can use HTML5 <video></video> if necessary.

• how to add hvt1 hvc2 to ffmpeg ?

  19 août 2020, par user10716022

  i only add libavformat library isom.c

  


  { AV_CODEC_ID_HEVC , MKTAG ('h', 'v', 'c', '2') }, /* HEVC / H.265 coded
with gpac */
 { AV_CODEC_ID_HEVC , MKTAG ('h', 'v', 't', '1') }, /* HEVC / H.265 coded
with gpac */


  


  i want use ffmpeg mpeg dash srd

  


  MPD video code ffmpeg do not have
this is my MPD

  


  &lt;?xml version="1.0"?>&#xA;&#xA;<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" minbuffertime="PT1.500S" type="static" mediapresentationduration="PT0H3M37.792S" maxsegmentduration="PT0H0M5.000S" profiles="urn:mpeg:dash:profile:isoff-live:2011">&#xA; <programinformation moreinformationurl="http://gpac.io">&#xA;  &#xA; </programinformation>&#xA;&#xA; <period duration="PT0H3M37.792S">&#xA;  <adaptationset segmentalignment="true" maxwidth="1920" maxheight="1012" maxframerate="24" par="1920:1012" lang="und" startwithsap="1">&#xA;   <essentialproperty schemeiduri="urn:mpeg:dash:srd:2014" value="1,0,0,0,0"></essentialproperty>&#xA;   <segmenttemplate media="output_qp22_dash_track1_$Number$.m4s" initialization="hight01_set1_init.mp4" timescale="24000" startnumber="1" duration="120000"></segmenttemplate>&#xA;   <representation mimetype="video/mp4" codecs="hvc2.1.6.L186.80" width="1920" height="1012" framerate="24" sar="1:1" bandwidth="3010576">&#xA;   </representation>&#xA;  </adaptationset>&#xA;</period>&#xA;</mpd>&#xA;

  


• ffmpeg ignore PUT and does POST when sending -f segment chunks [closed]

  5 novembre 2023, par l_-A-_l

  I cannot figure why ffmpeg does send chunck over PUT method when I use the -f dash (parameter) :

  


  ffmpeg -nostats -nostdin -i - -f dash -seg_duration 1 -window_size 10 extra_window_size 2 -remove_at_exit 1 -use_timeline 1 -dash_segment_type webm -c:a libvorbis -b:a 128k -method PUT http://nginx/test/main.mpd


  


  and refuses to PUT (and use POST instead) when I use -f segment :

  


  ffmpeg -i - -vn -acodec copy -f segment -segment_time 5 -method PUT  http://nginx/flux/segment_%3d.mp3


  


  (I need to use the PUT method)