On Sat, Mar 16, 2024 at 12:56 AM Def Etienne <shaker....@gmail.com> wrote:
> > Sent from my iPhone > > > On 16 Mar 2024, at 06:44, David Johansen <davejohan...@gmail.com> wrote: > > > > I've used ffmpeg to convert an H.264 .mp4 to segments for HLS playback > and > > it works. I'd like to then transcode them to H.265 so that it's available > > as well, and I'd like to process them as individual segments so it can be > > done in parallel. > > > > I'm doing that by creating a manifest that has the init.mp4 and single > > segment and then outputting just that segment, but when I do that, it > will > > only playback the first segment and then stop. I believe that something > is > > going wrong with the PTS and/or DTS values when I do this. > > > > I tried using -copyts but it didn't change the output and I also disabled > > B-frames because it made the PTS values of the resulting HLS appear in > > sequential order as the original one does, but it still won't play in the > > browser. > > > > The command you used and the complete uncut console output (a good > posting guideline) is always a good starting point for anyone who wants to > help. > Sorry, I should have included that. Here's the command to convert the file to HLS segments: ffmpeg -i input.mp4 -c:v copy -c:a copy -map v:0 -map a:0 -tag:v hvc1 -hls_segment_type fmp4 -hls_init_time 5.9 -hls_time 6 -hls_list_size 10000 -hls_flags "independent_segments+program_date_time+temp_file" -master_pl_name index.m3u8 -var_stream_map "v:0,agroup:aud a:0,agroup:aud,default:yes" -f hls "%v/index.m3u8" Then I make a manifest file for each segment that looks like this: #EXTM3U #EXT-X-TARGETDURATION:6 #EXT-X-MAP:URI=init.mp4 #EXTINF:<duration> <segment.m4s> #EXT-X-ENDLIST And then I run this command to transcode each segment: ffmpeg -i segment.m3u8 -c:v libx265 -tag:v hvc1 -x265-params "log-level=warning:no-wpp=1:lookahead-slices=0" -hls_segment_type fmp4 -hls_init_time 5.9 -hls_time 6 -f hls video.m3u8 I tried adding bframes=0 to -x265-params and that made the PTS values be sequential like the original input, but the player still only showed the first segment. I also tried adding -copyts and -muxdelay 0 but that didn't change the output. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
