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  • Supporting all media types

    13 avril 2011, par

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Sur d’autres sites (5198)

  • Short HLS MPEG2 Video Segments Do Not Play

    24 août 2019, par Jon H

    I’ve been attempting to cut a video into small segments (words), to be rearranged. While I’ve been able to do it with FFMPEG, cutting into segments and using the fast concat demuxer to reassemble the segments, I am trying to speed it up.

    I have been doing this by splitting the original video into short MPEG2 .ts segments for each word :

    ffmpeg -ss 1 -to 1.5 -i "source.mp4" -c:v libx264 -b:v 1200k -c:a aac -b:a 192k -hls_flags single_file "word.ts"

    I have then tried making a m3u8 playlist of these short video segments, but I found that only segments around 2 seconds or more, play at all.

    I then tried using the ’cat’ command to join these segments into a single file, which I understand should be possible with MPEG2 streams. However, this did not play all the segments either.

    To test if all the segments were present in this concatenated file, I used FFMPEG to convert it back into an MP4 file, and all the segments were present.

    I would appreciate any suggestions on producing the segments, and concatenating individual segments simply without FFMEPG. My project isn’t viable if having to call FFMPEG each time, but would work great if I can simply concatenate words together.

  • aarch64 : hevc : Reorder qpel_hv functions to prepare for templating

    25 mars 2024, par Martin Storsjö
    aarch64 : hevc : Reorder qpel_hv functions to prepare for templating

    This is a pure reordering of code without changing anything in
    
the individual functions.
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libavcodec/aarch64/hevcdsp_qpel_neon.S

  • aarch64 : hevc : Reorder epel_hv functions to prepare for templating

    25 mars 2024, par Martin Storsjö
    aarch64 : hevc : Reorder epel_hv functions to prepare for templating

    This is a pure reordering of code without changing anything in
    
the individual functions.
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libavcodec/aarch64/hevcdsp_epel_neon.S

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