> -----Original Message----- > From: ffmpeg-user [mailto:[email protected]] On Behalf Of > Mark Filipak > Sent: 05 February 2020 18:42 > To: [email protected] > Subject: Re: [FFmpeg-user] How can I pipe ffmpeg listing? > > On 02/05/2020 09:37 AM, Moritz Barsnick wrote: > > Hi, Moritz, and Thanks. > > > On Tue, Feb 04, 2020 at 23:17:28 -0500, Mark Filipak wrote: > >> This: > >> >ffmpeg -ss 2:00 -i g:\VIDEO_TS\VTS_02_2.VOB -filter:v idet -frames:v > >> 900 -an -f rawvideo -y NUL > >> produces the listing at the bottom -- it is that listing that I'm trying > >> to pipe. > > > > With "listing", do you mean these lines? > >> [Parsed_idet_0 @ 0000015ef0c72840] Repeated Fields: Neither: 772 Top: > 66 Bottom: 63 > >> [Parsed_idet_0 @ 0000015ef0c72840] Single frame detection: TFF: 687 > BFF: 1 Progressive: 159 Undetermined: 54 > >> [Parsed_idet_0 @ 0000015ef0c72840] Multi frame detection: TFF: 901 > BFF: 0 Progressive: 0 Undetermined: 0 > > > > These are emitted by the idet filter using ffmpeg's logging mechanism, > > which goes to stderr (the shell's standard error stream). You cannot > > change that target from the ffmpeg command line tool. > > > >> Redirection to a file doesn't work, either. > > > > To capture the log messages behind a '|' pipe, you need to redirect the > > stderr stream to stdout. I have no idea how to do that on Windows. A > > search on the net tells me to use "2>&1", like in a Unix Bourne shell. > > Thanks! This: > ffmpeg -ss 2:00 -i %1 -filter:v idet -frames:v 900 -an -f rawvideo -y > NUL 2>&1 | FINDSTR "Parsed_idet" > works. (At the bottom of this message is my script and its output.)
Great. For future reference you could also redirect stderr separately and directly to a file: ffmpeg ... 2>logfile.txt > > What I'm trying to do is find where a video switches between hard- & > soft-telecine. I could dump the applicable frame metadata > > progressive_sequence > picture_structure > top_field_first > repeat_first_field > progressive_frame > > and interpret the dump via a script, but I haven't found a way to dump > the metadata. > > Thanks for your help. > > ===== SCRIPT ===== > > @ECHO. > @ECHO ======================= 2 minutes > ======================= > @ffmpeg -hide_banner -ss 2:00 -i %1 -filter:v idet -frames:v 900 -an -f > rawvideo -y NUL 2>&1 | FINDSTR "Input Output Video: frame= Parsed_idet" > @ECHO. > @ECHO ======================= 6 minutes > ======================= > @ffmpeg -hide_banner -ss 6:00 -i %1 -filter:v idet -frames:v 900 -an -f > rawvideo -y NUL 2>&1 | FINDSTR "Input Output Video: frame= Parsed_idet" > @ECHO. > @ECHO ====================== 10 minutes > ======================= > @ffmpeg -hide_banner -ss 10:00 -i %1 -filter:v idet -frames:v 900 -an -f > rawvideo -y NUL 2>&1 | FINDSTR "Input Output Video: frame= Parsed_idet" > @ECHO. > @ECHO ====================== 14 minutes > ======================= > @ffmpeg -hide_banner -ss 14:00 -i %1 -filter:v idet -frames:v 900 -an -f > rawvideo -y NUL 2>&1 | FINDSTR "Input Output Video: frame= Parsed_idet" > @ECHO. > @ECHO ====================== 18 minutes > ======================= > @ffmpeg -hide_banner -ss 18:00 -i %1 -filter:v idet -frames:v 900 -an -f > rawvideo -y NUL 2>&1 | FINDSTR "Input Output Video: frame= Parsed_idet" > @ECHO. > @CMD /K > > ===== SCRIPT OUTPUT ===== > > ======================= 2 minutes ======================= > Input #0, mpeg, from 'G:\VIDEO_TS\VTS_02_2.VOB': > Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top > first), 720x480 [SAR 32:27 DAR 16:9], Closed Captions, 29.97 fps, 29.97 > tbr, 90k tbn, 59.94 tbc > Output #0, rawvideo, to 'NUL': > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480 > [SAR 32:27 DAR 16:9], q=2-31, 124291 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc > frame= 900 fps=0.0 q=-0.0 Lsize= 455625kB time=00:00:30.03 > bitrate=124291.7kbits/s speed=43.8x > [Parsed_idet_0 @ 00000258997ba500] Repeated Fields: Neither: 772 Top: > 66 Bottom: 63 > [Parsed_idet_0 @ 00000258997ba500] Single frame detection: TFF: 687 > BFF: 1 Progressive: 159 Undetermined: 54 > [Parsed_idet_0 @ 00000258997ba500] Multi frame detection: TFF: 901 > BFF: 0 Progressive: 0 Undetermined: 0 > > ======================= 6 minutes ======================= > Input #0, mpeg, from 'G:\VIDEO_TS\VTS_02_2.VOB': > Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top > first), 720x480 [SAR 32:27 DAR 16:9], Closed Captions, 29.97 fps, 29.97 > tbr, 90k tbn, 59.94 tbc > Output #0, rawvideo, to 'NUL': > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480 > [SAR 32:27 DAR 16:9], q=2-31, 124291 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc > frame= 900 fps=0.0 q=-0.0 Lsize= 455625kB time=00:00:30.03 > bitrate=124291.7kbits/s speed= 41x > [Parsed_idet_0 @ 00000213df83a500] Repeated Fields: Neither: 650 Top: > 128 Bottom: 123 > [Parsed_idet_0 @ 00000213df83a500] Single frame detection: TFF: 714 > BFF: 0 Progressive: 169 Undetermined: 18 > [Parsed_idet_0 @ 00000213df83a500] Multi frame detection: TFF: 900 > BFF: 0 Progressive: 0 Undetermined: 1 > > ====================== 10 minutes ======================= > Input #0, mpeg, from 'G:\VIDEO_TS\VTS_02_2.VOB': > Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top > first), 720x480 [SAR 32:27 DAR 16:9], Closed Captions, 29.97 fps, 29.97 > tbr, 90k tbn, 59.94 tbc > Output #0, rawvideo, to 'NUL': > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480 > [SAR 32:27 DAR 16:9], q=2-31, 124291 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc > frame= 900 fps=0.0 q=-0.0 Lsize= 455625kB time=00:00:30.03 > bitrate=124291.7kbits/s dup=180 drop=0 speed=47.9x > [Parsed_idet_0 @ 000002029e5aa500] Repeated Fields: Neither: 721 Top: > 0 Bottom: 0 > [Parsed_idet_0 @ 000002029e5aa500] Single frame detection: TFF: 0 > BFF: 0 Progressive: 715 Undetermined: 6 > [Parsed_idet_0 @ 000002029e5aa500] Multi frame detection: TFF: 0 > BFF: 0 Progressive: 721 Undetermined: 0 > > ====================== 14 minutes ======================= > Input #0, mpeg, from 'G:\VIDEO_TS\VTS_02_2.VOB': > Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top > first), 720x480 [SAR 32:27 DAR 16:9], Closed Captions, 29.97 fps, 29.97 > tbr, 90k tbn, 59.94 tbc > Output #0, rawvideo, to 'NUL': > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480 > [SAR 32:27 DAR 16:9], q=2-31, 124291 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc > frame= 900 fps=0.0 q=-0.0 Lsize= 455625kB time=00:00:30.03 > bitrate=124291.7kbits/s dup=179 drop=0 speed=56.6x > [Parsed_idet_0 @ 000001f59fc6a500] Repeated Fields: Neither: 720 Top: > 1 Bottom: 1 > [Parsed_idet_0 @ 000001f59fc6a500] Single frame detection: TFF: 4 > BFF: 0 Progressive: 453 Undetermined: 265 > [Parsed_idet_0 @ 000001f59fc6a500] Multi frame detection: TFF: 209 > BFF: 0 Progressive: 513 Undetermined: 0 > > ====================== 18 minutes ======================= > Input #0, mpeg, from 'G:\VIDEO_TS\VTS_02_2.VOB': > Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top > first), 720x480 [SAR 32:27 DAR 16:9], Closed Captions, 29.97 fps, 29.97 > tbr, 90k tbn, 59.94 tbc > Output #0, rawvideo, to 'NUL': > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480 > [SAR 32:27 DAR 16:9], q=2-31, 124291 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc > frame= 900 fps=0.0 q=-0.0 Lsize= 455625kB time=00:00:30.03 > bitrate=124291.7kbits/s dup=180 drop=0 speed=50.6x > [Parsed_idet_0 @ 000001b91fb9a500] Repeated Fields: Neither: 721 Top: > 0 Bottom: 0 > [Parsed_idet_0 @ 000001b91fb9a500] Single frame detection: TFF: 0 > BFF: 0 Progressive: 690 Undetermined: 31 > [Parsed_idet_0 @ 000001b91fb9a500] Multi frame detection: TFF: 0 > BFF: 0 Progressive: 721 Undetermined: 0 > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
