On 2/25/15 3:58 PM, Deron wrote:
On 2/25/15 11:00 AM, Deron wrote:
I'm trying to generate a number of HLS streams from a single source
including using the new webvtt for cc.
The following command:
ffmpeg -i test.ts -vn -f hls -hls_segment_filename "a.%d.ts" -y "a.m3u8"
Works as expected, but
ffmpeg -f lavfi -i "movie=test.ts[out0+subcc]" -vn -sn -f hls
-hls_segment_filename "a.%d.ts" -y "a.m3u8"
Fails with:
Input #0, lavfi, from 'movie=test.ts[out0+subcc]':
Duration: N/A, start: 9602.931211, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p,
1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 90k tbc
Stream #0:1: Subtitle: eia_608
Output #0, hls, to 'a.m3u8':
Output file #0 does not contain any stream
I get that I surpressed the video stream, and the audio is merged
with it. How do I get it out without changing the input? I ultimately
need to generate multiple streams including cc from a single input,
so I can't remove cc from the input.
Thanks,
Deron
Well, I decided that I didn't need the audio only stream if it was going
to be this much trouble. As it turns out, someone could have saved me
the aggravation and told me that the audio was not available at all and
not "merged with the video" as I presumed. I thought it was a bit
strange, but what do I know? I can't imagine why the audio would be dropped.
As it turns out, "movie=test.ts[out0+subcc]" generates a rawvideo
stream. No audio.
So what happens to the audio, and how do I get it??? What good is
subtitles if I loose the audio?
Thanks,
Deron
ffmpeg -f lavfi -i "movie=test.ts[out0+subcc]" test.avi
ffmpeg version N-70148-g418be7c Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration: --enable-shared --enable-gpl --enable-nonfree
--enable-libxvid --enable-libx264 --enable-libmp3lame --enable-libvorbis
--enable-libfaac --enable-libopenjpeg --enable-librtmp --enable-libx265
--disable-stripping
libavutil 54. 19.100 / 54. 19.100
libavcodec 56. 26.100 / 56. 26.100
libavformat 56. 23.104 / 56. 23.104
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 11.101 / 5. 11.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, lavfi, from 'movie=test.ts[out0+subcc]':
Duration: N/A, start: 2.117867, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1280x720
[SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn, 90k tbc
Stream #0:1: Subtitle: eia_608
Output #0, avi, to 'test.avi':
Metadata:
ISFT : Lavf56.23.104
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x720
[SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 59.94 fps, 59.94 tbn, 59.94 tbc
Metadata:
encoder : Lavc56.26.100 mpeg4
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg4 (native))
Press [q] to stop, [?] for help
frame=13086 fps=327 q=31.0 Lsize= 46145kB time=00:03:38.31
bitrate=1731.5kbits/s
video:45826kB audio:0kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.695515%
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