[FFmpeg-user] Converting .mov files playable on html5 players..but very slow

[Henk D. Schoneveld]

On 01 Jul 2015, at 23:58, Dani A <danix4u-at-yahoo.com at ffmpeg.org> wrote:

> If I always use the below command to convert .mov files to mp4, will it always work? I am only changing the audio codec and keeping the video codec the same.
> 
> ffmpeg -i MVI_0797.MOV  -c:v copy  -c:a mp3 -movflags faststart MVI_0797-fast.MP4
> 
> Are always .Mov files has h264 video codec, and the audio only is the changing part between Mov and MP4 files? 
No.
> 
> 
>     On Saturday, June 27, 2015 9:21 AM, Robert Krüger <krueger at lesspain.de> wrote:
> 
> 
> On Sat, Jun 27, 2015 at 8:30 AM, Dani A <danix4u-at-yahoo.com at ffmpeg.org>
> wrote:
> 
>> I tried to convert a .mov file to mp4 using the above command and I
>> recieved the below errors. what is wrong?
>> 
>> [root at test video]# ffmpeg -i MVI_0797.MOV  -c:v copy  -c:a copy
>> -movflags faststart MVI_0797-fast.MP4
>> ffmpeg version 2.6.2-  http://johnvansickle.com/ffmpeg/   Copyright (c)
>> 2000-2015 the FFmpeg developers
>>   built with gcc 4.9.2 (Debian 4.9.2-10)
>>   configuration: --enable-gpl --enable-version3 --disable-shared
>> --disable-debug --enable-runtime-cpudetect --enable-libmp3lame
>> --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex
>> --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig
>> --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb
>> --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc
>> --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass
>> --enable-gnutls --enable-libvidstab --enable-libsoxr --cc=gcc-4.9
>>   libavutil      54. 20.100 / 54. 20.100
>>   libavcodec    56. 26.100 / 56. 26.100
>>   libavformat    56. 25.101 / 56. 25.101
>>   libavdevice    56.  4.100 / 56.  4.100
>>   libavfilter    5. 11.102 /  5. 11.102
>>   libswscale      3.  1.101 /  3.  1.101
>>   libswresample  1.  1.100 /  1.  1.100
>>   libpostproc    53.  3.100 / 53.  3.100
>> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MVI_0797.MOV':
>>   Metadata:
>>     major_brand    : qt
>>     minor_version  : 537331968
>>     compatible_brands: qt  CAEP
>>     creation_time  : 2014-06-15 02:43:16
>>   Duration: 00:00:01.00, start: 0.000000, bitrate: 36419 kb/s
>>     Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 /
>> 0x31637661), yuvj420p(pc, bt709), 1920x1080, 34098 kb/s, 23.98 fps, 23.98
>> tbr, 24k tbn, 48k tbc (default)
>>     Metadata:
>>       creation_time  : 2014-06-15 02:43:16
>>     Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz,
>> stereo, s16, 1536 kb/s (default)
>>     Metadata:
>>       creation_time  : 2014-06-15 02:43:16
>> File 'MVI_0797-fast.MP4' already exists. Overwrite ? [y/N] y
>> 
> 
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 
> 
>> [mp4 @ 0xbe8a6c0] Could not find tag for codec pcm_s16le in stream #1,
>> codec not currently supported in container
>> 
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 
> 
> pcm audio is not supported by mp4 and not a good idea for web use anyway.
> try mp3 or aac.
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> 
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