名副其实的自主高端 汽车网评试驾WEY VV7c/VV7s
35 questions
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106
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ffmpeg: Resuming an encoding of an HLS stream results in broken playback (PTS discontinuity)
I want to start an HLS stream encode, stop it, then resume it by running the same command, creating a playlist with seamless playback.
However when I try playing the resulting m3u8 in mpv I see the ...
- 121
0
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22
views
Adjusting time for audio of HLS stream
Is it possible to adjust a value in the initialization section provided by EXT-X-MAP to adjust the timing of the audio during playback? For example, I'd like to shift the audio forward or backward by ...
- 101
0
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1
answer
174
views
Generate HLS streams from pre-encoded videos without re-encoding using ffmpeg
I have three videos: low.mp4, mid.mp4 and high.mp4, all of which were generated from the same source file using ffmpeg with the following command:
ffmpeg -y -i source.mp4 -c:v libx264 -crf SOMEVALUE -...
- 1
0
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97
views
How to update this script to generate HLS video with different resolution streams?
I have the following FFmpeg script:
ffmpeg -i video.mp4 -i video.vtt \
-map 0:v -map 0:a:0 -map 1 \
-s:v:0 1080x1920 -c:v:0 h264 -b:v:0 500K \
-c:a:0 copy -c:a:1 copy -c:a:2 copy -c:s webvtt \
-f ...
- 1
0
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0
answers
202
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First HLS segment overlapping when renditions have different framerates
I have a multi resolution m3u8 file, created from 1080p60 source file. Resolutions lower than 720p are converted to 30fps, while 720p+ stay at 60fps.
The problem is that the first segment is broken ...
- 101
0
votes
1
answer
136
views
Pink and green color on overlay logo
I ran into such a problem with hls streaming, adding filters to the overlay logo, but it was smeared with pink and green stripes. Has anyone come across this.
ffmpeg -f concat -safe 0 -re -i <(for ...
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186
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FFMpeg HLS to MXF video codec copy non monotonically increasing dts issue
I am rewrapping an HLS stream as an mxf file. The HLS is 1080p59.94 10bit 4:2:2. The mxf is a video codec copy and an audio conversion to pcm. The stream has video timecode burn-in for me to watch ...
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691
views
ffplay does not play hls continuously and it stop after a few first segments
I am using the following command to read a RTSP stream from an IP camera and record it as HLS:
ffmpeg -i rtsp://<user>:<password>@<ip>:<port> -c:v copy -c:a copy -...
1
vote
1
answer
1k
views
How do I create an master HLS playlist using existing .m3u8 playlists
I'm using FFmpeg to generate streaming files for a single resolution initially. Here is how my playlist and master-playlist looks like.
master.m3u8
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-STREAM-INF:BANDWIDTH=...
- 121
0
votes
1
answer
890
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ffmpeg dash output for multiple resolutions to be in the same mpd file
I am using ffmpeg to convert an input stream into multiple resolutions and creating an mpd for each resolution.
So far, so good.
But I am trying to find a way to create a single mpd for all ...
1
vote
0
answers
131
views
Looping segments breaks some players
I used ffmpeg to generate some segment files that I'm using as slate to play before a program starts. Using nodejs, I'm generating a an m3u8 file that loops perfectly in HLS.js, but on some players (...
- 111
0
votes
1
answer
2k
views
Reducing latency with ffmpeg RTSP->HLS->video.js
I am presently using ffmpeg to pull a stream from a camera using RTSP, and then output it as an HLS stream. I also have a webpage with a video.js player, using the example code found on this page.
My ...
2
votes
1
answer
2k
views
ffmpeg convert and segment subtitles
I'm trying to create an HLS subtitle playlist from subtitles embedded within a video file.
So the input looks something like this:
container: mkv
stream 0: video h264
stream 1: audio aac
stream ...
- 186
4
votes
2
answers
3k
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Audio discontinuities when generating HLS segments in different processes
I am creating MPEG-TS segments for HLS playback from multiple ffmpeg processes (it will be used for parallel encoding at a later stage). The commands are as follows — they can be run in sequence for ...
- 1,116
0
votes
1
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3k
views
How to force ffmpeg download live m3u8 from the first available segment?
When I use ffmpeg straight forward like this:
ffmpeg -i 'playlist.m3u8' -c copy out.mp4
it searches for current segment (or maybe the last one) and drops all previous.
I know that live playlist is a ...
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