I have written a different patch, which should auto-fix the problem,
but I can't compile and test it now (due to build system issues):
movenc.c affects both MP4 and MOV containers, right ?
====
--- ./movenc.c.orig 2016-10-11 06:24:44.328730759 -0400
+++ ./ffmpeg-3.1.3/ffmpeg-3.1.3/libavformat/movenc.c 2016-10-11
08:12:50.626150035 -0400
@@ -5533,22 +5533,26 @@
track->timescale = mov->video_track_timescale;
} else {
track->timescale = st->time_base.den;
while(track->timescale < 10000)
track->timescale *= 2;
}
+ if (track->timescale > 100000) {
+ int timescale_new = ((st->time_base.den) * (0x10000)) /
+ (st->time_base.num)*1000;
+ av_log(s, AV_LOG_WARNING,
+ "WARNING codec timebase is very high. If
duration is too long,\n"
+ "file may not be playable by Apple Quicktime.
Auto-setting\n"
+ "a shorter timebase %d instead of %d.\n",
timescale_new, track->timescale);
+ track->timescale = timescale_new;
+ }
if (st->codecpar->width > 65535 || st->codecpar->height > 65535) {
av_log(s, AV_LOG_ERROR, "Resolution %dx%d too large
for mov/mp4\n", st->codecpar->width, st->codecpar->height);
ret = AVERROR(EINVAL);
goto error;
}
- if (track->mode == MODE_MOV && track->timescale > 100000)
- av_log(s, AV_LOG_WARNING,
- "WARNING codec timebase is very high. If
duration is too long,\n"
- "file may not be playable by quicktime.
Specify a shorter timebase\n"
- "or choose different container.\n");
if (track->mode == MODE_MOV &&
track->par->codec_id == AV_CODEC_ID_RAWVIDEO &&
track->tag == MKTAG('r','a','w',' ')) {
enum AVPixelFormat pix_fmt = track->par->format;
if (pix_fmt == AV_PIX_FMT_NONE &&
track->par->bits_per_coded_sample == 1)
pix_fmt = AV_PIX_FMT_MONOWHITE;
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