Terje, thanks for noting the problem with av1.webm to our attention. I will fix it by adding the g=30 and keyint_min=30 to that render format. "h265.mp4 and h264.mp4" always work because of the addition of the lines "# use framerate for 1 keyframe/sec, needed for seeks; keyint_min=25;x264-params keyint=25". So the new lines for av1.webm of "g=30 and keyint_min=30" is the equivalent. Andrew, I tried using --kf-min-dist=30 and -kf-max-dist=30 and it rendered but the output was not playable. So since the above solution worked, I just will use the above instead. Still have to test av1_svt... next. On Wed, Aug 7, 2024 at 2:52 PM Terje J. Hanssen <[email protected]> wrote:
Den 07.08.2024 21:38, skrev Phyllis Smith via Cin:
g=30
keyint_min=30
Seems to work for av1.webm format -- still testing. I want to test Andrew's suggestions next.
On Wed, Aug 7, 2024 at 1:18 PM Andrew Randrianasulu < [email protected]> wrote:
On Wed, Aug 7, 2024 at 9:13 PM Phyllis Smith via Cin <[email protected]> wrote:
Summary is that the error message is due to lack of keyframes and the
workaround is to use Transcode.
BUT hopefully a better solution with the Render format parameters can be found. The render fix for h264/h265 formats is the addition of the lines below (which obviously is not pertinent to av1). I will see if I can find an alternative, but might not.
aomenc --help mentions
--kf-min-dist=<arg> Minimum keyframe interval (frames) --kf-max-dist=<arg> Maximum keyframe interval (frames)
and there seems to be way (aom-params) to pass libaom specific options via ffmpeg's ...
so .. aom-params=kf-min-dist=25:kf-max-dist=25 ?
for svt-av1 you hopefully can use just keyint= with svtav1-params line? command line svt av1 encoder seems to default for 5 seconds?
Also, may be add keyint_min=25 (for 25 fps vid) as generic libav* (ffmpeg) option
# use framerate for 1 keyframe/sec, needed for seeks keyint_min=25 (or keyint_min=30 for x265) x264-params=keyint=25 (or x265-params-keyint=30 for x265)
About the error message:
FFStream::seek:
/run/media/terje/Videoklipp/Cineform/av1_yuv422p10le_LP.webm
retry limit, pos=207 tstmp=8280, err: Input/output error ** seek fail 207, 8280
Seeking Issues ( https://cinelerra-gg.org/download/CinelerraGG_Manual/Seeking_Issues.html)
If you have an issue playing a video and not seeing it in the
Compositor (just see a black
screen), it is most likely due to the media not being designed to be editable. It is most likely not damaged. Generally it just does not have keyframes which are needed for seeking which is what is done when you move around the media and start playing in the middle. The media plays just fine in the compositor if you always play from the beginning because then you don’t need keyframes to seek. You can get around this problem if you proxy the media. A good choice to use for the proxy would be use scalar, ffmpeg/mp4 and size of 1/2.
The proxied media can then seek and you will see it play in the compositor because keyframes exist.
Or use TRANSCODE which adds keyframes when media is not seekable (see Manual for details). This is particularly useful for the mkv container, which often has seek problems.
Just a reminder about the message below.
FFMPEG::open_decoder: some stream times estimated:
This is not a problem. Basically, when you open a file if a stream has a known duration, there is no message. If the duration is unknown, it is estimated by using the File Size and Bitrate to estimate the duration. ----------------------------------------
@Andrew, @Phyllis
Thank for your comments and suggestions, which I so far only have read while doing some alternative testing.
First, to ensure this was correct understood: I didn't notice the same error messages using the same input file and rendering to h265.mp4 and h264.mp4
Now I have also tried to render the same input file using the (4.3x faster) av1_svt, but with the available 8-bit color depth in 10-bit mode: 17M av1_svt_yuv420p10le_SR.webm
Below follows output messages with no error messages, so yes, I think some preset parameters possibly should be added to the av1_aom.webm:
FFMPEG::open_decoder: some stream times estimated: /Videoklipp/Cineform/cfhd01.mkv Svt[info]: ------------------------------------------- Svt[info]: SVT [version]: SVT-AV1 Encoder Lib v1.8.0 Svt[info]: SVT [build] : GCC 10.3.1 20210422 (Red Hat 10.3.1-1) 64 bit Svt[info]: LIB Build date: Jul 31 2024 07:22:12 Svt[info]: ------------------------------------------- Svt[info]: Number of logical cores available: 20 Svt[info]: Number of PPCS 76 Svt[info]: [asm level on system : up to avx2] Svt[info]: [asm level selected : up to avx2] Svt[info]: ------------------------------------------- Svt[info]: SVT [config]: main profile tier (auto) level (auto) Svt[info]: SVT [config]: width / height / fps numerator / fps denominator : 1920 / 1080 / 25 / 1 Svt[info]: SVT [config]: bit-depth / color format : 10 / YUV420 Svt[info]: SVT [config]: preset / tune / pred struct : 10 / PSNR / random access Svt[info]: SVT [config]: gop size / mini-gop size / key-frame type : 161 / 16 / key frame Svt[info]: SVT [config]: BRC mode / rate factor : CRF / 35 Svt[info]: ------------------------------------------- FFMPEG::open_decoder: some stream times estimated: /Videoklipp/Cineform/cfhd01.mkv Render::render_single: Session finished. ** rendered 1780 frames in 51.541 secs, 34.536 fps FFMPEG::open_decoder: some stream times estimated: /Videoklipp/Cineform/av1_svt_yuv420p10le_SR.webm FFMPEG::open_decoder: some stream times estimated: /Videoklipp/Cineform/av1_svt_yuv420p10le_SR.webm FFMPEG::open_decoder: some stream times estimated: /Videoklipp/Cineform/av1_svt_yuv420p10le_SR.webm FFMPEG::open_decoder: some stream times estimated: /Videoklipp/Cineform/cfhd01.mkv