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<div class="moz-cite-prefix">Den 11.08.2024 20:36, skrev Phyllis
Smith:<br>
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cite="mid:CAOckJE2AMyLT2=TimnREk1YXnS0_fsg8mx17ZDDQqPseTx+wxA@mail.gmail.com">
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<div class="gmail_default" style="font-size:small"><br>
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<div> If there isn't other reasons against it, I will
suggest to rename the current preset av1.webm to
av1_aom.webm<br>
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<div><span class="gmail_default" style="font-size:small"><font
size="4">Good suggestion and no one has noted any reason
not to. It is done in GIT along with adding the 2 lines
that make the rendered file seekable.</font></span> <br>
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<div> <br>
And possibly upgrade to svt-av1 v.2.1.<br>
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<div><font size="4"><span class="gmail_default">Agreed -- I
started working on this on May 29, but had some
trouble. I will try harder!</span></font></div>
<div><font size="4"><span class="gmail_default"><br>
</span></font></div>
<div><span class="gmail_default" style="font-size:small"><font
size="4">I am still pondering the below information.</font><br>
</span></div>
<div><span class="gmail_default" style="font-size:small"></span>
<span class="gmail_default" style="font-size:small"></span><br>
Transcoding regarding duration was also mentioned above. <br>
My input file here was a cfhd transcoded with ffmpeg from a
Prores 422 hq source video file (that is not a arbitrary
cut).<br>
<br>
Alt. 1)<br>
Therefore I went back to my source Prores 422 (HQ) hd01.mov
which especially default includes 16 channels LPCM audio,
even though only 2 ch stereo is used.<br>
<br>
<br>
Loaded this Prores 422 hq source file into CinGG<br>
<br>
1) Video only rendering - no error messages<br>
<blockquote>Rendering to file
/Videoklipp/Cineform/av1_aom_yuv422p10le.webm<br>
File format; FFMPEG webm<br>
Video only wrench: av1.webm | yuv422p10le<br>
cin<br>
Cinelerra Infinity - built: Jul 29 2024 01:18:06<br>
....<br>
Render::render_single: Session finished.<br>
** rendered 1781 frames in 187.108 secs, 9.519 fps<br>
<br>
FFMPEG::open_decoder: some stream times estimated:
/run/media/terje/Videoklipp/Cineform/av1_aom_yuv422p10le.webm<br>
FFMPEG::open_decoder: some stream times estimated:
/run/media/terje/Videoklipp/Cineform/av1_aom_yuv422p10le.webm<br>
FFMPEG::open_decoder: some stream times estimated:
/run/media/terje/Videoklipp/Cineform/av1_aom_yuv422p10le.webm<br>
Total excess of backups: -50 <br>
Session time: 0:05:08<br>
Cpu time: user: 0:20:00.969 sys: 0:00:08.355<br>
</blockquote>
<br>
2) Audio only rendering - not possible in CinGG<br>
<blockquote>Cinelerra Infinity - built: Jul 29 2024 01:18:06<br>
-<br>
16 channels lpcm audio (actually only #1 and #2 stereo
used)<br>
<br>
Rendering to file /Videoklipp/Cineform/opus.webm<br>
File format; FFMPEG webm<br>
Audio only wrench: opus.webm<br>
<br>
[libopus @ 0x7f637c06a6c0] Opus mapping family undefined
for 16 channels.<br>
FFMPEG::open_encoder err: Invalid argument<br>
int FFMPEG::open_encoder(const char*, const char*):<br>
open failed
libopus:/run/media/terje/Videoklipp/Cineform/opus.webm<br>
Render::render_single: Session finished.<br>
Total excess of backups: -50 <br>
Session time: 0:02:21<br>
Cpu time: user: 0:00:13.680 sys: 0:00:02.102<br>
</blockquote>
-----------------<br>
<br>
Alt. 2) <br>
Transcoded alt. 1) source input file to Prores 422 hq with 2
ch stereo audio:<br>
<br>
<font face="Courier New, Courier, monospace">ffmpeg
-hide_banner -i hd01.mov -map_metadata 0 -c:v copy -c:a
pcm_s24le -ac 2 hd02.mov</font><br>
<br>
-----------------<br>
<br>
Alt. 3)<br>
Transcoded th source file Prores 422 (HQ) with LPCM audio to
CFHD quality 7 (high+), AAC audio (default) to stereo (-ac
2) and Metadata (some)<br>
<br>
<font face="Courier New, Courier, monospace">ffmpeg
-hide_banner -i hd01.mov -map_metadata 0 -c:v cfhd
-quality 7 -ac 2 cfhd01.mov<br>
<br>
</font><br>
By loading Alt. 2) Prores LPCM or Alt. 3) CFHD AAC with 2 ch
stereo audio into CinGG<br>
<br>
1) Video only av1_aom.webm rendering caused the previous
FFseek I/O errors<br>
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<br>
Especially that rendering Alt. 2) Prores with 2 ch audio caused
FFseek I/O errors confused me, because the video part was just
copied from the original Alt.1)<br>
that worked fine. <br>
<br>
<blockquote type="cite"
cite="mid:CAOckJE2AMyLT2=TimnREk1YXnS0_fsg8mx17ZDDQqPseTx+wxA@mail.gmail.com">
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<div> <br>
2) Audio only hd02.mov stereo lpcm -> opus.webm worked ok<br>
<blockquote><font face="Courier New, Courier, monospace">cin</font><br>
<font face="Courier New, Courier, monospace">Cinelerra
Infinity - built: Jul 29 2024 01:18:06</font><br>
<font face="Courier New, Courier, monospace">........</font><br>
<font face="Courier New, Courier, monospace">Render::render_single:
Session finished.</font><br>
<font face="Courier New, Courier, monospace">** rendered
1781 frames in 6.387 secs, 278.848 fps</font><br>
<br>
<font face="Courier New, Courier, monospace">FFMPEG::open_decoder:
some stream times estimated:
/run/media/terje/Videoklipp/Cineform/opus.webm</font><br>
<font face="Courier New, Courier, monospace">audio0 pad 16
0 (16)</font><br>
<font face="Courier New, Courier, monospace">FFMPEG::open_decoder:
some stream times estimated:
/run/media/terje/Videoklipp/Cineform/opus.webm</font><br>
<font face="Courier New, Courier, monospace">Total excess
of backups: -50 </font><br>
<font face="Courier New, Courier, monospace">Session time:
0:01:49</font><br>
<font face="Courier New, Courier, monospace">Cpu time:
user: 0:00:15.458 sys: 0:00:02.457</font><br>
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