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• DASH playback for encrypted .webm video files in Shaka Player

  7 mars 2017, par Prabhdeep Singh

  I have been trying to play encrypted .WEBM media files in ShakaPlayer without much success and I am here to seek advise from anybody who had been through this. It would be great if somebody in this awesome developer community can guide me here.

  Round 1 - What I tried (Encoded & Dashed) :

  • Encoded .MP4 file to multiple-streams Video .WEBM (VP9) &
    single-stream Audio .WEBM (Vorbis) files using FFMPEG.
  • Created DASH MANIFEST.MPD file with WEBM_TOOLS/WEBM_DASH_MANIFEST

  Outcome : I am able to play this in Shaka Player without any issues.

  Round 2 - What I tried (Encoded, Encrypted & Dashed) :

  • Encoded .MP4 file to multiple-streams Video .WEBM (VP9) & single-stream Audio .WEBM (Vorbis) files using FFMPEG.

  • Encrypted generated .WEBM files with WEBM_TOOLS/WEBM_CRYPT

  • Created DASH MANIFEST.MPD file with WEBM_TOOLS/WEBM_DASH_MANIFEST

  Outcome : I don’t know how should I play this content in Shaka Player. Where and how should I provide the .key file generated in step 2 above to Shaka Player. I would like to use Clearkeys with CENC on browser. I don’t want to encode to multi-stream .MP4, but only .WEBM.

  Thanks so much !

• Concat video/audio files downloaded from mpd dash manifest

  15 mai 2022, par Bloworlf Mathurin

  I have this manifest I fetched from an url :

  


  &lt;?xml version="1.0"?>&#xA;<mpd type="dynamic" xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" availabilitystarttime="2022-05-14T21:18:50-07:00" availabilityendtime="2022-05-14T22:35:36-07:00" timeshiftbufferdepth="PT20S" suggestedpresentationdelay="PT2S" minbuffertime="PT1S" publishtime="2022-05-14T21:18:50-07:00" minimumupdateperiod="PT1S" validationerrors="" currentservertimems="0" firstavtimems="1652588331877" lastvideoframets="0" loapstreamid="17944405669984029" publishframetime="939">&#xA;    <period start="PT0S">&#xA;        <adaptationset segmentalignment="true" maxwidth="432" maxheight="766" maxframerate="30">&#xA;            <representation mimetype="video/mp4" codecs="avc1.4d401e" width="432" height="766" framerate="30" startwithsap="1" bandwidth="38894" maxbandwidth="46772" playbackresolutionmos="432:82.84,720:65.43,216:70.39" qualityclass="sd" qualitylabel="432p">&#xA;                <segmenttemplate presentationtimeoffset="0" timescale="1000" initialization="some/url/some_id-init.m4v?ms=m_C&amp;amp;ccb=2-4" media="some/url/some_id-$Time$.m4v?ms=m_C&amp;amp;ccb=2-4">&#xA;                    <segmenttimeline>&#xA;                        <s t="4092613" d="2000"></s>&#xA;                        <s t="4094613" d="2000"></s>&#xA;                        <s t="4096613" d="2000"></s>&#xA;                        <s t="4098613" d="2000"></s>&#xA;                        <s t="4100613" d="2000"></s>&#xA;                        <s t="4102613" d="2000"></s>&#xA;                        <s t="4104613" d="2000"></s>&#xA;                        <s t="4106613" d="2000"></s>&#xA;                        <s t="4108613" d="2000"></s>&#xA;                        <s t="4110613" d="2000"></s>&#xA;                    </segmenttimeline>&#xA;                </segmenttemplate>&#xA;            </representation>&#xA;        </adaptationset>&#xA;        <adaptationset segmentalignment="true">&#xA;            <representation mimetype="audio/mp4" codecs="mp4a.40.2" audiosamplingrate="44100" startwithsap="1" bandwidth="48979" maxbandwidth="57732">&#xA;                <segmenttemplate presentationtimeoffset="0" timescale="1000" initialization="some/url/some_id-init.m4a?ms=m_C&amp;amp;ccb=2-4" media="some/url/some_id-$Time$.m4a?ms=m_C&amp;amp;ccb=2-4">&#xA;                    <segmenttimeline>&#xA;                        <s t="4092613" d="2000"></s>&#xA;                        <s t="4094613" d="2000"></s>&#xA;                        <s t="4096613" d="2000"></s>&#xA;                        <s t="4098613" d="2000"></s>&#xA;                        <s t="4100613" d="2000"></s>&#xA;                        <s t="4102613" d="2000"></s>&#xA;                        <s t="4104613" d="2000"></s>&#xA;                        <s t="4106613" d="2000"></s>&#xA;                        <s t="4108613" d="2000"></s>&#xA;                        <s t="4110613" d="2000"></s>&#xA;                    </segmenttimeline>&#xA;                </segmenttemplate>&#xA;            </representation>&#xA;        </adaptationset>&#xA;    </period>&#xA;</mpd>&#xA;

  


  I manage to download all the files (init file + 10 segment files) and put them in an array

  


  File[] files = downloadSegments();

  


  So I have :
[0] -> file-0.m4v (which is the init file)
[1] -> file-1.m4v (1st segment)
... and so on.

  


  My question is how can I concat/append all these files into another file (final_segment.m4v) ?

  


  I looked around a lot and am now using 'com.arthenica:ffmpeg-kit-video:4.5.1-1'
I've last tried :

  


  FFmpegSession session = FFmpegKit.execute("-i file-0.m4v -i file-1.m4v ... -c copy final_segment.m4v");


  


  Is there something I'm missing ?

  


  Also I assume that I'll have to do the same for the audio segments. So I will have 2 files (final_segment.m4v and final_segment.m4a) that I will have to merge/mix together.

  


  If you could help me with some piece of code, that would be great.

  


• Add watermark-overlay with -filter_complex to multiple outputs (dash)

  13 juillet 2020, par Werner

  I'm creating a set of files for DASH (without audio) with :

  


  ffmpeg -i "input.mov"
 -y
 -keyint_min 100 -g 100
 -sc_threshold 0
 -c:v libx264
 -pix_fmt yuv420p
 -map v:0 -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
 -map v:0 -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
 -map v:0 -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
 -map v:0 -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
 -init_seg_name "myname_$RepresentationID$.$ext$"
 -media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
 -use_template 1 -use_timeline 1
 -seg_duration 4 -adaptation_sets "id=0,streams=v"
 -f dash "myname.mpd"


  


  Now I want to add a watermark. How is it done ? I tried something like :

  


  ffmpeg -i "input.mov"
 -y
 -i "watermark.png" // Added
 -filter_complex "overlay=24:960" // Added
 -keyint_min 100 -g 100
 -sc_threshold 0
 -c:v libx264
 -pix_fmt yuv420p
 -map v:0 -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
 -map v:0 -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
 -map v:0 -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
 -map v:0 -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
 -init_seg_name "myname_$RepresentationID$.$ext$"
 -media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
 -use_template 1 -use_timeline 1
 -seg_duration 4 -adaptation_sets "id=0,streams=v"
 -f dash "myname.mpd"


  


  But this results in only getting the 180p-Version of the video. How can I still get all versions of the video with the overlay ?

  


  Added :
I tried as well :

  


  ffmpeg -i "input.mov"
 -y
 -i "watermark.png"
 -filter_complex "[0:v][1:v]overlay=24:960[out0][out1][out2][out3]"
 -keyint_min 100 -g 100
 -sc_threshold 0
 -c:v libx264
 -pix_fmt yuv420p
 -map "[out0]" -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k
 -map "[out1]" -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k
 -map "[out2]" -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k
 -map "[out3]" -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k
 -init_seg_name "myname_$RepresentationID$.$ext$"
 -media_seg_name "myname_$RepresentationID$-$Number%05d$.$ext$"
 -use_template 1 -use_timeline 1
 -seg_duration 4 -adaptation_sets "id=0,streams=v"
 -f dash "myname.mpd"


  


  which results in the error :
No output pad can be associated to link label 'out1'.