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ffmpeg caps audio bitrate to 128kb/s [closed]
1er mai 2013, par Andrew BurnsI want to upconvert a file to 256kb/s. (I understand I am losing quality and all
that, I know that I really want to upconvert a 64kb/s=>256kb/s)The command I am using
ffmpeg -i "Same Love.m4a" -acodec libfaac "Same Love.m4a" -b:a 256kb \
-loglevel debugI have used every combination that I can think of and ffmpeg will only upconvert
to 128kbs !Here is a log of my output
$ ffmpeg -i "Same Love.m4a" -acodec libfaac "ready_to_import_to_itunes/Same Love.m4a" -b:a 256kb -loglevel debug ffmpeg version 1.0 Copyright (c) 2000-2012 the FFmpeg developers built on Oct 12 2012 12:31:30 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn) configuration : —prefix=/usr/local/Cellar/ffmpeg/1.0 —enable-shared —enable-gpl —enable-version3 —enable-nonfree —enable-hardcoded-tables —cc=cc —host-cflags= —host-ldflags= —enable-libx264 —enable-libfaac —enable-libmp3lame —enable-libxvid libavutil 51. 73.101 / 51. 73.101 libavcodec 54. 59.100 / 54. 59.100 libavformat 54. 29.104 / 54. 29.104 libavdevice 54. 2.101 / 54. 2.101 libavfilter 3. 17.100 / 3. 17.100 libswscale 2. 1.101 / 2. 1.101 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fc6ab006600] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fc6ab006600] ISO : File Type Major Brand : mp42 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fc6ab006600] File position before avformat_find_stream_info() is 30844 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fc6ab006600] All info found [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fc6ab006600] File position after avformat_find_stream_info() is 31216 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Same Love.m4a' : Metadata : major_brand : mp42 minor_version : 0 compatible_brands : mp42isom3gp63g2a3gp4 creation_time : 2012-08-11 09:56:26 Duration : 00:05:18.71, start : 0.000000, bitrate : 64 kb/s Stream #0:0(und), 1, 1/44100 : Audio : aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 64 kb/s Metadata : creation_time : 2012-08-11 09:56:26 handler_name : soun [abuffer @ 0x7fc6aac0e560] Setting entry with key 'time_base' to value '1/44100' [abuffer @ 0x7fc6aac0e560] Setting entry with key 'sample_rate' to value '44100' [abuffer @ 0x7fc6aac0e560] Setting entry with key 'sample_fmt' to value 's16' [abuffer @ 0x7fc6aac0e560] Setting entry with key 'channel_layout' to value '0x3' [graph 0 input from stream 0:0 @ 0x7fc6aac0e660] tb:1/44100 samplefmt:s16 samplerate:44100 chlayout:0x3 [aformat @ 0x7fc6aac0eba0] Setting entry with key 'sample_fmts' to value 's16' [aformat @ 0x7fc6aac0eba0] Setting entry with key 'channel_layouts' to value '0x4,0x3,0x7,0x107,0x37,0x3f' Output #0, ipod, to 'ready_to_import_to_itunes/Same Love.m4a' : Metadata : major_brand : mp42 minor_version : 0 compatible_brands : mp42isom3gp63g2a3gp4 encoder : Lavf54.29.104 Stream #0:0(und), 0, 1/44100 : Audio : aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 128 kb/s Metadata : creation_time : 2012-08-11 09:56:26 handler_name : soun Stream mapping : Stream #0:0 -> #0:0 (aac -> libfaac) Press [q] to stop, [?] for help [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fc6ab006600] demuxer injecting skip 1024 [aac @ 0x7fc6ab02f600] skip 2048 samples due to side data [aac @ 0x7fc6ab02f600] skip whole frame, skip left : 0 EOF on sink link output stream 0:0:default.28.0kbits/s No more output streams to write to, finishing. size= 5028kB time=00:05:18.71 bitrate= 129.2kbits/s video:0kB audio:4974kB subtitle:0 global headers:0kB muxing overhead 1.093817% [AVIOContext @ 0x7fc6aac0ca20] Statistics : 2580581 bytes read, 0 seeksWhat I think is happening is that ffmpeg determines that there is really no
benifit from going to 256k so caps it at 128.How do I force it to output the file at the bitrate specified ? (I have tried
with mp3 too and the samething happens) -
Unrecognized option 'crf 21' in ffmpeg
18 août 2020, par Gustavo BorbaI'm trying to convert a video with ffmpeg in a simple jar application, but I'm getting this Unrecognized option Error splitting the argument list : Option not found.


I'm doing the following :


List <string> command = new ArrayList<string>();
command.add("ffmpeg");
command.add("-y");
command.add("-i"); 
command.add(myCustomFileClass.getInputFileName()); 
command.add("-c:v libx264");
command.add("-preset slower");
command.add("-crf 21");
command.add("-c:a aac"); 
command.add(myCustomFileClass.getOutputFileName());
logger.debug(command.toString().replaceAll(",", ""));
ProcessBuilder builder = new ProcessBuilder(command);
process = builder.start();
</string></string>

After that, I just read the output from the command with a buffered reader and put it on the debug logger. I'm getting this output :


ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
Unrecognized option 'crf 21'.
Error splitting the argument list: Option not found


What's curious is that when I execute what's inside
command.toString().replaceAll(",", "")in my terminal, the command executes without any error. It's only ocurring in the java application.

I saw similar posts of people suggesting updating ffmpe (which I don't think it's the case) and splitting the arguments, but it's alredy done. I tried to just eliminate the crf config, but it just changes the error to
At least one output file must be specified.

This suggests that the problem is indeed a bad splitting, but I'm out of ideas.


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avcodec : add Newtek SpeedHQ decoder
8 janvier 2017, par Steinar H. Gundersonavcodec : add Newtek SpeedHQ decoder
This decoder can decode all existing SpeedHQ formats (SHQ0–5, 7, and 9),
including correct decoding of the alpha channel.1080p is decoded in 142 fps on one core of my i7-4600U (2.1 GHz Haswell),
about evenly split between bitstream reader and IDCT. There is currently
no attempt at slice or frame threading, even though the format trivially
supports both.NewTek very helpfully provided a full set of SHQ samples, as well as
source code for an SHQ2 encoder (not included) and assistance with
understanding some details of the format.
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