Here is how I test the seg format:
Shift-P | Recording
FFMPEG: seg
Audio wrench: mkv_lpcm.seg
Video wrench: mpeg2sd422p_mkv.seg
r(ecord)
Path:/home/terje/Videos/Record_mpeg2sd422p_%02d.mkv
Start record ..........
Stop record
Then the following segment files are stored
du -sh Record*
7,5M Record_mpeg2sd422p_00.mkv
7,3M Record_mpeg2sd422p_01.mkv
7,3M Record_mpeg2sd422p_02.mkv
8,2M Record_mpeg2sd422p_03.mkv
7,3M Record_mpeg2sd422p_04.mkv
7,3M Record_mpeg2sd422p_05.mkv
8,2M Record_mpeg2sd422p_06.mkv
7,3M Record_mpeg2sd422p_07.mkv
..........
ffprobe -hide_banner Record_mpeg2sd422p_00.mkv
Input #0, matroska,webm, from 'Record_mpeg2sd422p_00.mkv':
Metadata:
ENCODER : Lavf61.1.100
Duration: 00:00:02.31, start: 0.020000, bitrate: 26865 kb/s
Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv,
bt709/unknown/unknown, progressive), 720x576 [SAR 1:1 DAR 5:4], 50 fps,
50 tbr, 1k tbn
Metadata:
DURATION : 00:00:02.180000000
Side data:
cpb: bitrate max/min/avg: 30000000/0/0 buffer size: 25001984
vbv_delay: N/A
Stream #0:1(eng): Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Metadata:
DURATION : 00:00:02.311000000
The video and audio duration is not exactly identical
I am not sure that changing the segment time in the presets work
correctly, because at least in my test the file sizes didn't change much(?)
On 20.06.2025 20:49, Phyllis Smith wrote:
Successfully used both of these new render formats: mpeg2sd422p.mkv
and mpeg2sd422p.m2ts.
But I have not found a good/clean way to use any of the xxxx.seg
formats yet which can be easily documented and used so holding off on
those still. Thanks, Terje (and Andrew).
On Sun, Jun 15, 2025 at 5:06 AM Terje J. Hanssen via Cin
<[email protected]> wrote:
Attach the mkv (draft) presetg versions:
cat mpeg2sd422p.mkv
matroska mpeg2video
cin_pix_fmt=yuv422p
b=30M
muxrate=35M
minrate=30M
maxrate=30M
bufsize=25M
profile=422p
cat mpeg2sd422p_mkv.seg
segment mpeg2video
segment_format=matroska
segment_time=00:10 <= your segment time
reset_timestamps=1
cin_pix_fmt=yuv422p
b=30M
muxrate=35M
minrate=30M
maxrate=30M
bufsize=25M
profile=422p
cat mkv_lpcm.seg
segment pcm_s16le
segment_format=matroska
segment_time=00:10 <= your segment time
reset_timestamps=1
id 0x1100
-------------
ffprobe -hide_banner cgg_mpeg2sd422p.mkv
Input #0, matroska,webm, from 'cgg_mpeg2sd422p.mkv':
Metadata:
ENCODER : Lavf61.1.100
Duration: 00:00:09.84, start: 0.000000, bitrate: 30898 kb/s
Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv,
bt709/unknown/unknown, progressive), 720x576 [SAR 1:1 DAR 5:4], 50
fps,
50 tbr, 1k tbn
Metadata:
DURATION : 00:00:09.840000000
Side data:
cpb: bitrate max/min/avg: 30000000/0/0 buffer size: 25001984
vbv_delay: N/A
Stream #0:1(eng): Audio: pcm_s16le, 48000 Hz, 2 channels, s16,
1536 kb/s
Metadata:
DURATION : 00:00:09.791000000
----------
ffprobe -hide_banner cgg_mpeg2sd422p_03.mkv
Input #0, matroska,webm, from 'cgg_mpeg2sd422p_03.mkv':
Metadata:
ENCODER : Lavf61.1.100
Duration: 00:00:08.18, start: 6.010000, bitrate: 8025 kb/s
Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv,
bt709/unknown/unknown, progressive), 720x576 [SAR 1:1 DAR 5:4], 50
fps,
50 tbr, 1k tbn
Metadata:
DURATION : 00:00:08.180000000
Side data:
cpb: bitrate max/min/avg: 30000000/0/0 buffer size: 25001984
vbv_delay: N/A
Stream #0:1(eng): Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s
Metadata:
DURATION : 00:00:08.180000000
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