пн, 5 мая 2025 г., 01:02 Terje J. Hanssen <[email protected]>:
> > > Den 04.05.2025 15:42, skrev Andrew Randrianasulu: > > > > вс, 4 мая 2025 г., 16:31 Terje J. Hanssen <[email protected]>: > >> >> >> Den 04.05.2025 05:49, skrev Andrew Randrianasulu: >> >> >> >> вс, 4 мая 2025 г., 01:37 Terje J. Hanssen <[email protected]>: >> >>> >>> Den 03.05.2025 13:00, skrev Terje J. Hanssen: >>> >>> >>> Den 02.05.2025 21:42, skrev Andrew Randrianasulu: >>> >>> >>> >>> пт, 2 мая 2025 г., 22:37 Terje J. Hanssen <[email protected]>: >>> >>>> https://www.mail-archive.com/[email protected]/msg05748.html >>>> >>>> I contine this new thread with an short extract from the long growing >>>> [Cin] ms2130 HDMI-USB3 UHD capture card - not quite as expected? >>>> >>>> But shouldn't a 422 and not a 420 output format be created? >>>> >>> >> it seems in some cases ffmpeg not geared towards preserving most >>>> information, just picks up most commonly defined/first pixel format. >>>> >> Try mpeg2video as output codec, and/or specify pixel format >>>> (pix_fmt) more explicitly before output's filename? >>>> >>>> >>> Could you possibly examplify the latter? >>>> >>>> >>>> I think I just theorized ffmpeg may try to get some info from alsa >>>> device file directly, as it tries with /dev/video. But I never >>>> tried >>>> this way, so I can be totally wrong! >>>> >>>> ------------------------------- >>>> >>>> Instead of 50i (pal interlaced fields), I try 50 fps (progressive) that >>>> at least is a pal frequence. >>>> >>>> And yes, it seems from the output that ffmpeg uses mpeg1video as >>>> default output codec. >>>> >>>> Furter I try to combine the current line >>>> >>>> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576 >>>> -framerate 25 -t 20 -i /dev/video2 out-720x576_ms2130.mpeg >>>> >>>> >>>> with and utilize the syntax developed 2021 for "Blu-ray compliant >>>> MPEG-2 SD video with LPCM audio" >>>> >>>> ffmpeg -i dv28.dv -c:v mpeg2video -refs 1 -bf 2 -b:v 25M -maxrate 25M >>>> -minrate 25M -bufsize 45M -muxrate 45M -dc 10 -c:a pcm_s16be -f vob >>>> dv28.mpg >>>> >>>> and for the current ongoing "DVD compliant MPEG-2 Video and PCM Audio" >>>> >>>> ffmpeg -hide_banner -i dv01.dv -c:v mpeg2video -refs 1 -bf 2 -b:v 8M >>>> -maxrate 8M -minrate 8M -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f >>>> vob -flags +ilme+ildct dv01.mpg >>>> >>>> to first >>>> >>>> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576 >>>> -framerate 50 -c:v mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate 8M -minrate 8M >>>> -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20 -i /dev/video2 >>>> 720x576_50p_ms2130.mpg >>>> Option b:v (video bitrate (please use -b:v)) cannot be applied to input >>>> url /dev/video2 -- you are trying to apply an input option to an output >>>> file or vice versa. Move this option before the file it belongs to. >>>> Error parsing options for input file /dev/video2. >>>> Error opening input files: Invalid argument >>>> >>>> >>>> and next revised with no output. That is I need help to debug the >>>> syntax error: >>>> >>>> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576 >>>> -framerate 50 -i /dev/video2 -c:v mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate >>>> 8M -minrate 8M -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20 >>>> 720x576_50p_ms2130.mpg >>>> [video4linux2,v4l2 @ 0x55db770ef9c0] Dequeued v4l2 buffer contains >>>> corrupted data (0 bytes). >>>> Input #0, video4linux2,v4l2, from '/dev/video2': >>>> Duration: N/A, start: 0.000000, bitrate: 331776 kb/s >>>> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576, >>>> 331776 kb/s, 50 fps, 50 tbr, 1000k tbn >>>> Stream mapping: >>>> Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native)) >>>> Press [q] to stop, [?] for help >>>> [video4linux2,v4l2 @ 0x55db770ef9c0] Dequeued v4l2 buffer contains >>>> corrupted data (0 bytes). >>>> Last message repeated 30 times >>>> [mpeg2video @ 0x55db77114f00] Warning vbv_delay will be set to 0xFFFF >>>> (=VBR) as the specified vbv buffer is too large for the given bitrate! >>>> Output #0, vob, to '720x576_50p_ms2130.mpg': >>>> Metadata: >>>> encoder : Lavf59.27.100 >>>> Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, progressive), >>>> 720x576, q=2-31, 8000 kb/s, 50 fps, 90k tbn >>>> Metadata: >>>> encoder : Lavc59.37.100 mpeg2video >>>> Side data: >>>> cpb: bitrate max/min/avg: 8000000/8000000/8000000 buffer size: >>>> 20000000 vbv_delay: N/A >>>> frame= 0 fps=0.0 q=0.0 Lsize= 0kB time=00:00:00.00 bitrate=N/A >>>> speed= 0x >>>> video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB >>>> muxing overhead: unknown >>>> Output file is empty, nothing was encoded (check -ss / -t / -frames >>>> parameters if used) >>>> >>>> >>> well, I think framerate still 25 for 50i stream .... >>> >>> can you re-check last line with framerate parameter removed or changed >>> back to 25? >>> >>> >>> Ok, as this old post by my mistake already has been forwarded to the >>> list and replied, I will follow it up later today, but need to rig rig up >>> my camcorder and devices >>> >>> >>> Finally ready, I had to recall a lot since 2023. >>> >>> ls /dev/video* >>> /dev/video0 /dev/video1 /dev/video2 /dev/video3 >>> >>> >>> for i in /dev/video*; do echo "$i"; udevadm info --query=all >>> --attribute-walk --name=$i | grep -E "name"; done >>> /dev/video0 >>> ATTR{name}=="USB3.0 UHD: USB3.0 UHD" >>> /dev/video1 >>> ATTR{name}=="USB3.0 UHD: USB3.0 UHD" >>> /dev/video2 >>> ATTR{name}=="USB 2.0 Camera: HD 720P Webcam" >>> /dev/video3 >>> ATTR{name}=="USB 2.0 Camera: HD 720P Webcam" >>> >>> >>> v4l2-ctl --list-devices >>> USB 2.0 Camera: HD 720P Webcam (usb-0000:00:14.0-11.2): >>> /dev/video2 >>> /dev/video3 >>> /dev/media1 >>> >>> USB3.0 UHD: USB3.0 UHD (usb-0000:00:14.0-3): >>> /dev/video0 >>> /dev/video1 >>> /dev/media0 >>> >>> As seen the HDMI-USB3 capture card + the S-Video/HDMI converter (with >>> the analog S-video camcorder) is now on /dev/video0 >>> while the USB2 webcam is on /dev/video2 >>> >> >> >> but what is on video1 ? >> >> >> Nothing as far as I can see(?). It seems both camera devices allocate or >> are associated with three devices each. >> >> >> it seems that whole thing fail at >> >> Dequeued v4l2 buffer contains corrupted data (0 bytes). >> >> >> I seems to happend when and after using unsupported fps >> >> Does anything else (guvcview, vlc ..) process video stream this usb3 UHD >> device? >> >> mplayer tv:// -demuxer tv ? >> >> >> Not that I use, but have not haven't found a way to verify it. >> >> However, I have recalled and found out more with progress. >> >> The most important it seems required to reboot the machine with the >> camcorder ON (video signal) on beforehand, before ffmpeg get the video >> input. >> >> Reboot also seems required to clean up v4L2 buffer after using >> unsupported fps ffplay or ffmpeg cause the >> "Dequeued v4l2 buffer contains corrupted data (0 bytes)." >> Hopefully there are a v4L command to easier cleanup the latter? >> > > > Does unpluggin and repluggin it helps without reboot? > > > It is easier and faster for me to reboot than to creep under the table and > unplug from the WS backplane :) > There is the only working USB3 port, while it tend to hang on the > frontpanel. I read somewhere once that shared USB buses may have such > problems on Linux. > > > > Otherwise you probably want to talk to v4l2 maintainers or knowledgable > people at suse forums ... > >> >> Beside the already listed Video4Linux devices, there are also >> >> cat /proc/asound/cards >> >> 0 [PCH_1 ]: HDA-Intel - HDA Intel PCH >> HDA Intel PCH at 0x4200910000 irq 168 >> 1 [PCH ]: HDA-Intel - HDA Intel PCH >> HDA Intel PCH at 0x41300000 irq 169 >> 2 [UHD ]: USB-Audio - USB3.0 UHD >> MACROSILICON USB3.0 UHD at usb-0000:00:14.0-3, >> super speed >> 3 [Camera ]: USB-Audio - USB 2.0 Camera >> Sonix Technology Co., Ltd. USB 2.0 Camera at >> usb-0000:00:14.0-11.2, high speed >> >> >> However, so far ffmpeg has yet to find any audio streams via v4l2 as seen >> below. >> > > > may be you need another -i so you can point ffmpeg at alsa or pulseaudio > audio capture device? > > yes, this line grows bigger by the day ... ) > > > Thank you for the tip and reminder regarding alsa input. I also found a > FFmpeg wiki: Capture / V4L2_ALSA that helped me > https://trac.ffmpeg.org/wiki/Capture/V4L2_ALSA > > arecord -L > > null > Discard all samples (playback) or generate zero samples (capture) > sysdefault > Default Audio Device > speexrate > Rate Converter Plugin Using Speex Resampler > pipewire > PipeWire Sound Server > upmix > Plugin for channel upmix (4,6,8) > default > Default ALSA Output (currently PipeWire Media Server) > sysdefault:CARD=UHD > USB3.0 UHD, USB Audio > Default Audio Device > front:CARD=UHD,DEV=0 > USB3.0 UHD, USB Audio > Front output / input > sysdefault:CARD=PCH_1 > HDA Intel PCH, ALC897 Analog > Default Audio Device > front:CARD=PCH_1,DEV=0 > HDA Intel PCH, ALC897 Analog > Front output / input > sysdefault:CARD=Camera > USB 2.0 Camera, USB Audio > Default Audio Device > front:CARD=Camera,DEV=0 > USB 2.0 Camera, USB Audio > Front output / input > > > I used -i hw:CARD=UHD,DEV=0 as working alsa input device for ffmpeg below > ------------------------ > > Capture MPEG-2 File with 422 Video an PCM_DVD Audio Encoding > > cd /Videoklipp/HDMI-USB3_Capture > > Reboot camcorder to clean up v4l2 buffer first: > > ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576 > -framerate 50 -i /dev/video0 -f alsa -ac 2 -i hw:CARD=UHD,DEV=0 -c:v > mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate 8M -minrate 8M -bufsize 20M > -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20 720x576_50fps+alsa_ms2130.mpg > > Input #0, video4linux2,v4l2, from '/dev/video0': > Duration: N/A, start: 247.290426, bitrate: 331776 kb/s > Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576, > 331776 kb/s, 50 fps, 50 tbr, 1000k tbn > [aist#1:0/pcm_s16le @ 0x558f7224bf00] Guessed Channel Layout: stereo > Input #1, alsa, from 'hw:CARD=UHD,DEV=0': > Duration: N/A, start: 1746391255.237803, bitrate: 1536 kb/s > Stream #1:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s > Stream mapping: > Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native)) > Stream #1:0 -> #0:1 (pcm_s16le (native) -> pcm_dvd (native)) > Press [q] to stop, [?] for help > [mpeg2video @ 0x558f72233280] Warning vbv_delay will be set to 0xFFFF > (=VBR) as the specified vbv buffer is too large for the given bitrate! > Output #0, vob, to '720x576_50fps+alsa_ms2130.mpg': > Metadata: > encoder : Lavf61.7.100 > Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, progressive), > 720x576, q=2-31, 8000 kb/s, 50 fps, 90k tbn > Metadata: > encoder : Lavc61.19.101 mpeg2video > Side data: > cpb: bitrate max/min/avg: 8000000/8000000/8000000 buffer size: > 20000000 vbv_delay: N/A > Stream #0:1: Audio: pcm_dvd, 48000 Hz, stereo, s16, 1536 kb/s > Metadata: > encoder : Lavc61.19.101 pcm_dvd > [out#0/vob @ 0x558f7224c200] video:18921KiB audio:3756KiB subtitle:0KiB > other streams:0KiB global headers:0KiB muxing overhead: 1.320964% > frame= 1000 fps= 50 q=2.5 Lsize= 22976KiB time=00:00:19.98 > bitrate=9420.4kbits/s speed=0.998x > > Stopped automatic with frame=1000 > -------- > > du -sh * > 23M 720x576_50fps+alsa_ms2130.mpg > 19M 720x576_50fps_ms2130.mpg > -------- > > ffprobe -hide_banner 720x576_50fps+alsa_ms2130.mpg > > Input #0, mpeg, from '720x576_50fps+alsa_ms2130.mpg': > Duration: 00:00:20.01, start: 0.520000, bitrate: 9408 kb/s > Stream #0:0[0x1e0]: Video: mpeg2video (4:2:2), yuv422p(tv, progressive), > 720x576 [SAR 1:1 DAR 5:4], 50 fps, 50 tbr, 90k tbn > Side data: > cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 20004864 > vbv_delay: N/A > Stream #0:1[0xa0]: Audio: pcm_dvd, 48000 Hz, stereo, s16, 1536 kb/s > > > ======================================== > > > ----------------------- > > > S-vido as well as audio L/R cables are connected between the camcorder out >> and A/D converter IN. >> Maybe additional configuration is required (I didn't think the separate >> sound card (Behringer U-Phono should be necessary) >> ---------- >> >> To list the v4l2 device capabilities; >> >> v4l2-ctl -d /dev/video0 --list-formats-ext >> >> ioctl: VIDIOC_ENUM_FMT >> Type: Video Capture >> >> [0]: 'YUYV' (YUYV 4:2:2) >> Size: Discrete 1920x1080 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 1600x1200 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 1360x768 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 1280x1024 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 1280x960 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 1280x720 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 1024x768 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 800x600 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 720x576 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 720x480 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> Size: Discrete 640x480 >> Interval: Discrete 0.017s (60.000 fps) >> Interval: Discrete 0.020s (50.000 fps) >> Interval: Discrete 0.033s (30.000 fps) >> Interval: Discrete 0.050s (20.000 fps) >> Interval: Discrete 0.100s (10.000 fps) >> >> >> That is supported 10-20-30-50-60 fps for all sizes, not 25 fps! >> > > so it looks like it does some frame/field interpolation (for s-video > input) without letting user correct/disable this? > > I don't see real drawback it makes progressive 50p PAL video output. > > > Does this device come with manual of any sort? Any Windows utility perhaps? > > > This is the ms2130 HDMI-USB3 dongle we also discussed in older threads: > https://www.aliexpress.com/item/1005004883158574.html > > https://www.cnx-software.com/2022/11/07/ms2130-based-4k-hdmi-to-usb-3-0-video-capture-dongle-sells-for-19/ > https://www.mail-archive.com/[email protected]/msg05587.html > > The AV S-Video to HDMI converter is this one > > https://www.ebay.com.au/itm/356431236663?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20231107084023%26meid%3Dbe9608c9e82b4402bdf76dd76348ab53%26pid%3D101875%26rk%3D3%26rkt%3D4%26sd%3D405137532923%26itm%3D356431236663%26pmt%3D1%26noa%3D0%26pg%3D2332490%26algv%3DSimVIDwebV3WithCPCExpansionEmbeddingSearchQuerySemanticBroadMatchSingularityRecallReplaceKnnV4WithVectorDbNsOptHotPlRecall%26brand%3DUnbranded&_trksid=p2332490.c101875.m1851&itmprp=cksum%3A356431236663be9608c9e82b4402bdf76dd76348ab53%7Cenc%3AAQAKAAABYHKEKKNMUePryBh1zZl0qrjonWK6%252Bbjh8v6%252FxTRbw1Loxqx736BoO2V7ozv6W4xuOBJjwGhPLWk9lnRB2teM6PFgOrZGVcTwpTth7MW79p066SWQrB1VasW1Di58xl1RMBXsH%252BaNxpzil0t8bdqbPkgJlZgvtHVYNSkxo5xG%252Bq21xDVUvrBLotjMgH%252FqV5wXQshGzZM4R6lRyvrYsaYO6TKvrPFmelkCTCubM5eKn0qdO3WG4prHt35axM0b1AnPHppmlHMdGYmjckTyOKNM9%252FV6GLsHrR8V%252Ff%252B4IzCQPxMALQwAlk93n4I9O8AtpmJfVUqsoKsJZFWDdLSsj%252B4SwyzNEGDD0PvOh7nWjXVZBIKMAXxQ94%252B6ePFlKMbiIx4MUcjDAsxbXWMGCAgmUAUvyT8%252FjaimC0vYNMPEguAR4RrTGwG3aZFugrXdz9WAUWrYTwBHrcQRD06DIrkiCLvdErY%253D%7Campid%3APL_CLK%7Cclp%3A2332490&itmmeta=01JTDZ3923JE7AHB2E0118810J > > > ------------- >> >> Try the same test for /dev/video1 >> >> v4l2-ctl -d /dev/video1 --list-formats-ext >> >> ioctl: VIDIOC_ENUM_FMT >> >> =========== >> >> ffmpeg listed available formats (supported pixel formats, video formats, >> and frame sizes) for a particular input device: >> >> ffmpeg -hide_banner -f v4l2 -list_formats all -i /dev/video0 >> >> [video4linux2,v4l2 @ 0x55a384b214c0] Raw : yuyv422 : >> YUYV 4:2:2 : 1920x1080 1600x1200 1360x768 1280x1024 1280x960 1280x720 >> 1024x768 800x600 720x576 720x480 640x480 >> [in#0 @ 0x55a384b21200] Error opening input: Immediate exit requested >> Error opening input file /dev/video0. >> >> And similar test for /dev/video1 >> >> ffmpeg -hide_banner -f v4l2 -list_formats all -i /dev/video1 >> >> [video4linux2,v4l2 @ 0x557e1a5164c0] ioctl(VIDIOC_G_INPUT): Inappropriate >> ioctl for device >> [in#0 @ 0x557e1a516200] Error opening input: Inappropriate ioctl for >> device >> Error opening input file /dev/video1. >> Error opening input files: Inappropriate ioctl for device >> >> =============== >> >> With supported 50 fps specified, ffplay playback looks ok visually: >> >> ffplay -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576 >> -framerate 50 /dev/video0 >> >> Input #0, video4linux2,v4l2, from '/dev/video0':B sq= 0B >> Duration: N/A, start: 311.577886, bitrate: 331776 kb/s >> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576, >> 331776 kb/s, 50 fps, 50 tbr, 1000k tbn >> ^Cterje@localhost:/Videoklipp/HDMI-USB3_Capture> sq= 0B >> >> =============== >> >> Capture DVD compatible MPG video (no audio found) with supported 50 fps >> progressive video. >> No Audio stream!? >> >> ffmpeg -hide_banner -f v4l2 -input_format yuyv422 -video_size 720x576 >> -framerate 50 -i /dev/video0 -c:v mpeg2video -refs 1 -bf 2 -b:v 8M -maxrate >> 8M -minrate 8M -bufsize 20M -muxrate 11M -dc 10 -c:a pcm_dvd -f vob -t 20 >> 720x576_50fps_ms2130.mpg >> >> Input #0, video4linux2,v4l2, from '/dev/video0': >> Duration: N/A, start: 323.195348, bitrate: 331776 kb/s >> Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 720x576, >> 331776 kb/s, 50 fps, 50 tbr, 1000k tbn >> Stream mapping: >> Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native)) >> Press [q] to stop, [?] for help >> [mpeg2video @ 0x55e390580200] Warning vbv_delay will be set to 0xFFFF >> (=VBR) as the specified vbv buffer is too large for the given bitrate! >> Output #0, vob, to '720x576_50fps_ms2130.mpg': >> Metadata: >> encoder : Lavf61.7.100 >> Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, progressive), >> 720x576, q=2-31, 8000 kb/s, 50 fps, 90k tbn >> Metadata: >> encoder : Lavc61.19.101 mpeg2video >> Side data: >> cpb: bitrate max/min/avg: 8000000/8000000/8000000 buffer size: >> 20000000 vbv_delay: N/A >> [out#0/vob @ 0x55e390581e00] video:18921KiB audio:0KiB subtitle:0KiB >> other streams:0KiB global headers:0KiB muxing overhead: 1.242550% >> frame= 1000 fps= 50 q=2.5 Lsize= 19156KiB time=00:00:19.98 >> bitrate=7854.2kbits/s speed=0.998x >> >> >> Stopped automatic ! Why? >> > > may be usb cable just moved a bit? > > > No, next test also stopped at frame=1000 > Maybe this is some security default for "still" camcorder (Sony TR2000) on > a desk mount where the image is not changed or moved. > I have not tested playback of real S-video tape recordings. > try to remove "-t 20" part of ffmpeg command line? or change it to 60 (seconds) or something suitable for longer tests ... at least AV to hdmi box should come with manual ;) hopefully there is copy somewhere online ... Sorry, I missed initially that you use TWO devices to get s-video into your workstation. Yes, it was in email subject line. Happy capturing! > > > >> ---------------- >> >> du -sh * >> >> 19M 720x576_50fps_ms2130.mpg >> >> >> ffprobe -hide_banner 720x576_50fps_ms2130.mpg >> >> Input #0, mpeg, from '720x576_50fps_ms2130.mpg': >> Duration: 00:00:20.00, start: 0.520000, bitrate: 7846 kb/s >> Stream #0:0[0x1e0]: Video: mpeg2video (4:2:2), yuv422p(tv, >> progressive), 720x576 [SAR 1:1 DAR 5:4], 50 fps, 50 tbr, 90k tbn >> Side data: >> cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 20004864 >> vbv_delay: N/A >> >> >> The video file playback looks ok with correct SD aspect ratio using >> ffplay and VLC, though "1080P" is printer near the top-right corner. >> > > > hm ...... I hope this "overlay" can be disabled? > > > > >> ============================ >> >> >> >> >> >> >
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