[FFmpeg-trac] #2451(undetermined:new): Inputting some webM files screws up output playback
FFmpeg
trac at avcodec.org
Tue Apr 9 01:06:30 CEST 2013
#2451: Inputting some webM files screws up output playback
-------------------------------------+-------------------------------------
Reporter: nealzebub | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: git-master | undetermined
Keywords: fps | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Changes (by cehoyos):
* keywords: => fps
* version: unspecified => git-master
Comment:
You have to specify a framerate if you want to convert this sample to
isom.
{{{
$ ffmpeg -i RRSF49.webm -qscale 2 -strict -2 -r 24000/1001 out.mp4
ffmpeg version N-51678-g1f2ce32 Copyright (c) 2000-2013 the FFmpeg
developers
built on Apr 8 2013 20:35:54 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl --disable-indev=jack
libavutil 52. 25.100 / 52. 25.100
libavcodec 55. 2.100 / 55. 2.100
libavformat 55. 1.100 / 55. 1.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 49.100 / 3. 49.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, matroska,webm, from 'RRSF49.webm':
Duration: 00:00:31.79, start: 0.000000, bitrate: 436 kb/s
Stream #0:0(eng): Video: vp8, yuv420p, 640x360, SAR 1:1 DAR 16:9, 1k
fps, 1k tbr, 1k tbn, 1k tbc (default)
Stream #0:1: Audio: vorbis, 44100 Hz, stereo, fltp (default)
Please use -q:a or -q:v, -qscale is ambiguous
File 'out.mp4' already exists. Overwrite ? [y/N] y
Output #0, mp4, to 'out.mp4':
Metadata:
encoder : Lavf55.1.100
Stream #0:0(eng): Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 640x360
[SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 24k tbn, 23.98 tbc (default)
Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo,
fltp, 128 kb/s (default)
Stream mapping:
Stream #0:0 -> #0:0 (vp8 -> mpeg4)
Stream #0:1 -> #0:1 (vorbis -> aac)
Press [q] to stop, [?] for help
frame= 762 fps=719 q=2.0 Lsize= 5053kB time=00:00:31.81
bitrate=1301.1kbits/s
video:4537kB audio:492kB subtitle:0 global headers:0kB muxing overhead
0.483038%
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2451#comment:1>
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