On Sun, 23 Feb 2025 at 03:48, Timo Rothenpieler <t...@rothenpieler.org> wrote:
> On 22.02.2025 21:32, Dennis Mungai wrote: > > On Sat, 22 Feb 2025 at 23:15, Timo Rothenpieler <t...@rothenpieler.org > > <mailto:t...@rothenpieler.org>> wrote: > > > > On 17.02.2025 23:45, Dennis Mungai wrote: > > > Hello there, > > > > > > In FFmpeg's HEVC & AV1 encoder wrappers, the private codec option > - > > > s12m_tc , documented as "Use timecode (if available)", is > > present, but > > > unmapped in the H.264 encode wrapper. > > > > > > This, however, should also be present in h264_nvenc, as indicated > in > > > ffnvcodec's https://github.com/FFmpeg/nv-codec-headers/blob/ > > master/ <https://github.com/FFmpeg/nv-codec-headers/blob/master/> > > > include/ffnvcodec/nvEncodeAPI.h#L2432 <https://github.com/FFmpeg/ > > nv- <https://github.com/FFmpeg/nv-> > > > codec-headers/blob/master/include/ffnvcodec/nvEncodeAPI.h#L2432> > > > > > > Is there a reason why this timecode SEI is omitted in h264_nvenc? > > > > Those time codes are not S12M side data, they'd be a completely new > > thing to implement, of which I'm not sure where to source the data > for. > > Not sure what exactly they are or what the difference is, but h264 > does > > not seem to support S12M time code sitedata, at least from looking at > > the lavc code. > > > > > > > > This is well noted. > > FFmpeg 4.1 (as per the changelog) https://github.com/FFmpeg/FFmpeg/ > > blob/master/Changelog <https://github.com/FFmpeg/FFmpeg/blob/master/ > > Changelog> does support decoding S12M timecode in h264. > > > > Circling back to the original question(s) with your additions above: > > 1. Can h264_nvenc be likewise configured to emit the equivalent "s12m > > timecode(s)" with a similar option as the av1 & hevc_nvenc encoder > wrappers? > > 2. Is pic timing SEI signalling implemented in h264_nvenc? > > Are you able to test this? > I pushed patches to https://github.com/BtbN/FFmpeg that should in theory > write those h264 picture timing SEI messages, but I can't find a single > sample that includes such time codes. > I can test the pic-timing SEI insertion(s) in NVENC, will run a build and report back shortly. _______________________________________________ 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".
