Questions tagged [mpeg-dash]

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142 views

The ffmpeg webm_dash_manifest demuxer fails with webvtt subtitles

I am trying to create a DASH manifest using ffmpeg and I encounter some difficulties with the subtitles. I get the error [webm_dash_manifest @ 0x55e19db48180] EBML header parsing failed [...
2
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0answers
2k views

How to convert encrypted mpeg dash created with Bento4 mp4-dash.py to MP4

I have MPEG dash video files created with Bento4 mp4-dash.py. The files have encription, but I have the MPD and the audio and video segments. I am trying to get my original MP4 file back from those ...
1
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0answers
205 views

Changing DASH Parameters in FFmpeg on the fly?

I am using FFmpeg to create MPEG dash segments from my camera and playing it using Shaka Player. But I want to change the segment size (For example 2 seconds to 1 second) without creating a new ...
1
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0answers
568 views

DASH Live vs OnDemand profiles

I've read about dash profiles and from what I understood the difference between live and on-demand profiles are that live furthermore splits each representation into segments (which is critical for ...
1
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0answers
245 views

Understanding mpeg-dash for VoD

What programs should I use for create MPEG-DASH stream and generate manifest file [may be ffmpeg but I'm not sure that it is enough]? Can I add subtitles file after I create stream? Can I store audio ...
1
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0answers
475 views

Change resolution according to bandwidth at the start of the video

The use case described here is very much the same as the YouTube's feature where a lower resolution of the video is selected if the user's network speed is low. But, I'd like to do this only at the ...
0
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0answers
14 views

FFMPEG - MXF to DASH FrameRate

I'm converting a MXF file to DASH using FFMPEG, but having a hard time maintaing the frame rate, if you can see from the below input file has a frame rate of 25, but the mpd file has a frame rate of ...
0
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0answers
49 views

How to add metadata tags without altering video structure/format? FFmpeg

I'm modifying DASH-formatted segments, and my aim is to add extra information to the video segment using metadata tags. I'm using ffmpeg to record video from my webcam and store segments named like: ...
0
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1answer
26 views

Serving static video content directly vs. via adaptive streaming protocols (HLS, DASH)

Is there an advantage of serving static video content (not a live stream) via adaptive streaming protocols such as HLS or DASH over serving them directly as files using HTTP server in terms of speed? ...
0
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0answers
320 views

ffmpeg I can't do dash muxing

I tried to perform a basic dash muxing with FFmpeg but I failed. Using the following command: ffmpeg -s:v 1920x1080 -r 25 -i inputVideo.yuv -c:a aac -c:v libx265 -f dash \ –seg_duration 2 out.mpd ...
0
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0answers
15 views

Applying video filters on MPEG Dash segments

I know that it will probably require recreating whole MPEG Dash stream but I'm curious if is it possible to apply a drawtext video filter on existing Dash segments? I I've managed to merge segments ...
0
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0answers
492 views

Constructing playable mp4 video file from MPEG-Dash segments

I am having an unencrypted MPEG-Dash manifest file and I am trying to re-construct from the downloaded segments a playable video file. I have so far tried to concatenate the initialization file to ...
0
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0answers
88 views

FFmpeg: apply audio/video fade-in on the first TS chunk, then “cat” all chunks produces a frame loss

this is my first post (on video.stackexchange.com). I need some explanation regarding to re-encoding a single .ts chunk and then use cat command. I'll explain my scenario. I've a lot of .ts chunks ...
0
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1answer
705 views

FFmpeg Media Source Extension Examples and Adaptive VOD and Live Streaming

I have a quick questions. Has anybody examples or links for the use of FFmpeg with the Media Source Extension for pure JavaScript adaptive VOD-, or Live-Streaming? I mean really pure not HLS or DASH. ...
0
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0answers
634 views

Transcode FROM MPEG-DASH

I have an input MPEG-DASH stream and I want to transcode it. First of all, need to decode it and then route an output to FFmpeg and encode it, but not have any ideas how to decode MPEG-DASH. Please ...