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• FFMPEG Segment Threads Equivalent Option

  24 août 2018, par Bruno Andrade

  I was downloading video from a hls m3u8 stream using the ffmpeg command in php :

  exec('ffmpeg -hide_banner -loglevel verbose -n -i https://example.com/playlist.m3u8 -acodec copy -bsf:a aac_adtstoasc -vcodec copy file.mp4 1> log.txt  2>&1', $output, $var);

  But I was having problems downloading speed and the problem was not the internet.

  So I installed and used the livestreamer.io OR streamlink.github.io/ and also slowed down the download.

  So I made use of the hls-segment-threads=5 option according to the API document :

  The size of the thread pool used to download segments.

  This solved the problem, is there any equivalent option in the FFMPEG ?
  Or have something I can do with PHP + FFMPEG to get this result that this hls-segment-threads option provides ?

  Most shared servers come with FFMPEG installed but the same does not fit with livestreamer or streamlink so I need a solution that works for everyone.

  *I do not understand python do not know what this option exactly does

• showall equivalent ffmpeg flags in VLC ?

  5 décembre 2019, par vagran

  I have a stream which I can play in ffplay using command like this :

  ffplay -flags2 +showall rtsp://localhost:12345/video

  Notice -flags2 +showall option which instructs ffplay not to wait until the first keyframe received before start playing. My video does not have ones (I-frames). It uses encoding scheme which uses only P-frames, so initially video is corrupted, but after several seconds it gradually becomes good. This is not so rare case, actually many popular nowadays DJI drones (e.g. Mavic or Inspire where my video is from, encoded video data is unchanged H.264 stream provided by DJI SDK) have such encoding. So without this flag the playback never starts. The same behaviour is visible in VLC, it connects to RTSP server, receives the stream, but video is not playing probably because of the same reason. Here is a video sample which can be played by ffplay -flags2 +showall inspire.ts.
  Is it possible to specify equivalent option to VLC and be able to play such videos ?

• Upload a LIVE HLS output from FFMPEG to Amazon S3 bucket

  22 janvier 2023, par Pit Digger

  I have an ffmpeg command that outputs live hls stream from a vod file to local disk. I would like to upload the HLS chunks and manifest file in real time to Amazon S3 Bucket. Is it possible to upload it directly from memory ?

  


  Here is the ffmpeg command

  


  ffmpeg -stream_loop -1 -re -i bunny_1080p_30fps.mp4 -c:v libx264 \
-x264opts keyint=30:min-keyint=30:scenecut=-1 -tune zerolatency -s 1280x720 \
-b:v 1400k -bufsize 1400k -hls_start_number_source epoch -f hls stream.m3u8


  


  Note that I have checked all questions here but none of them do that for a live stream and for multiple files output like hls or dash stream.

  


  One option that I have tried is using node-watch module and upload file on change notification, but that does introduce some buffering. But if there was any better option. https://github.com/yuanchuan/node-watch