On 2020-03-12T10:38:43+0100, Ulf Zibis <ulf.zi...@gmx.de> wrote:
> Am 12.03.20 um 02:24 schrieb Ted Park:
>>> ... and how can I avoid this, or which argument should I pass to
>>> -video_track_timescale ?
>> Passing the timescale to that option would work I think.
> And which value should I choose?
See https://stackoverflow.com/a/43337235.
So -video_track_timescale 60k for instance.
> (difficult to know, as "video_track_timescale" is nowhere documented)
ffmpeg -hide_banner -h muxer=mov | grep "video_track_timescale"
-video_track_timescale <int> E......... set timescale of all video
tracks (from 0 to INT_MAX) (default 0)
I had a look at your 'MVI_1324.MOV'.
ffmpeg -i MVI_1324.MOV -c:v libx264 -preset ultrafast -level 4.1 -g 15
-colorspace smpte170m -color_primaries bt709 -color_trc bt709
-video_track_timescale 60k -c:a copy -map_metadata 0 MVI_1324_test.MOV
diff -u <(ffmpeg -i MVI_1324.MOV 2>&1) <(ffmpeg -i MVI_1324_test.MOV 2>&1)
--- /dev/fd/63 2020-03-13 16:54:23.000000000 +0100
+++ /dev/fd/62 2020-03-13 16:54:23.000000000 +0100
@@ -9,17 +9,21 @@
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
-Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MVI_1324.MOV':
+Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MVI_1324_test.MOV':
Metadata:
major_brand : qt
- minor_version : 537331968
- compatible_brands: qt CAEP
+ minor_version : 512
+ compatible_brands: qt
creation_time : 2020-02-05T20:17:27.000000Z
- Duration: 00:00:29.10, start: 0.000000, bitrate: 23351 kb/s
- Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661),
yuvj420p(pc, smpte170m/bt709/bt709), 1280x720, 23228 kb/s, 29.97 fps, 29.97
tbr, 30k tbn, 60k tbc (default)
+ encoder : Lavf58.35.101
+ Duration: 00:00:29.10, start: 0.000000, bitrate: 9374 kb/s
+ Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661),
yuvj420p(pc, smpte170m/bt709/bt709), 1280x720, 9276 kb/s, 29.97 fps, 29.97 tbr,
60k tbn, 59.94 tbc (default)
Metadata:
creation_time : 2020-02-05T20:17:27.000000Z
+ handler_name : VideoHandler
+ encoder : Lavc58.65.102 libx264
Stream #0:1(eng): Audio: pcm_u8 (raw / 0x20776172), 12000 Hz, mono, u8,
96 kb/s (default)
Metadata:
creation_time : 2020-02-05T20:17:27.000000Z
+ handler_name : SoundHandler
At least one output file must be specified
-video_track_timescale 60k changes "30k tbn" to "60k tbn". So it doesn't change
"tbc" at all.
-- Reino
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