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Sur d’autres sites (9385)

  • avcodec : Make ff_alloc_packet() based encoders accept user buffers

    11 mai 2021, par Andreas Rheinhardt
    avcodec : Make ff_alloc_packet() based encoders accept user buffers

    Up until now, these encoders received non-refcounted packets
    
(whose data was owned by the corresponding AVCodecContext)
    
from ff_alloc_packet() ; these packets were made refcounted lateron
    
by av_packet_make_refcounted() generically.
    
This commit makes these encoders accept user-supplied buffers by
    
replacing av_packet_make_refcounted() with an equivalent function
    
that is based upon get_encode_buffer().
    

    (I am pretty certain that one can also set the flag for mpegvideo-
    
based encoders, but I want to double-check this later. What is certain
    
is that it reallocates the buffer owned by the AVCodecContext
    
which should maybe be moved to encode.c, so that proresenc_kostya.c
    
and ttaenc.c can make use of it, too.)
    

    Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
    • [DH] libavcodec/aacenc.c
    • [DH] libavcodec/alacenc.c
    • [DH] libavcodec/aliaspixenc.c
    • [DH] libavcodec/asvenc.c
    • [DH] libavcodec/cfhdenc.c
    • [DH] libavcodec/cinepakenc.c
    • [DH] libavcodec/encode.c
    • [DH] libavcodec/ffv1enc.c
    • [DH] libavcodec/flashsv2enc.c
    • [DH] libavcodec/flashsvenc.c
    • [DH] libavcodec/gif.c
    • [DH] libavcodec/hapenc.c
    • [DH] libavcodec/huffyuvenc.c
    • [DH] libavcodec/j2kenc.c
    • [DH] libavcodec/lclenc.c
    • [DH] libavcodec/libfdk-aacenc.c
    • [DH] libavcodec/libilbc.c
    • [DH] libavcodec/libopencore-amr.c
    • [DH] libavcodec/libopusenc.c
    • [DH] libavcodec/libspeexenc.c
    • [DH] libavcodec/libtwolame.c
    • [DH] libavcodec/libvo-amrwbenc.c
    • [DH] libavcodec/libxvid.c
    • [DH] libavcodec/ljpegenc.c
    • [DH] libavcodec/magicyuvenc.c
    • [DH] libavcodec/mlpenc.c
    • [DH] libavcodec/mpegaudioenc_fixed.c
    • [DH] libavcodec/mpegaudioenc_float.c
    • [DH] libavcodec/opusenc.c
    • [DH] libavcodec/pcxenc.c
    • [DH] libavcodec/pngenc.c
    • [DH] libavcodec/proresenc_anatoliy.c
    • [DH] libavcodec/qoienc.c
    • [DH] libavcodec/qtrleenc.c
    • [DH] libavcodec/roqvideoenc.c
    • [DH] libavcodec/rpzaenc.c
    • [DH] libavcodec/sgienc.c
    • [DH] libavcodec/smcenc.c
    • [DH] libavcodec/snowenc.c
    • [DH] libavcodec/sonic.c
    • [DH] libavcodec/sunrastenc.c
    • [DH] libavcodec/svq1enc.c
    • [DH] libavcodec/targaenc.c
    • [DH] libavcodec/tiffenc.c
    • [DH] libavcodec/ttaenc.c
    • [DH] libavcodec/utvideoenc.c
    • [DH] libavcodec/vorbisenc.c
    • [DH] libavcodec/wavpackenc.c
    • [DH] libavcodec/wmaenc.c
    • [DH] libavcodec/xbmenc.c

  • ffmpeg : Safe Place To Cut AC3, AAC, and MP3 Audio

    24 mai 2022, par Harry Muscle

    Does AC3, AAC, or MP3 audio have the equivalent of keyframes where it's safe to make cuts in the audio ? I have several long audio file that I need to preserve the quality of but I need to make a few edits in a specific location. I was hoping to cut the audio file into parts along the equivalent of keyframes, make the edits to the sections in question (which will will result in that section being re-encoded), and then stitch everything back together thus keeping the majority of the audio in its original quality without any re-encoding.

    &#xA;

    How would I go about finding the correct locations to split such audio files and perform the actually splitting using ffmpeg ?

    &#xA;

  • Translating VLC transcoding command to Gstreamer command

    31 mars 2022, par Goonturr

    I have the following vlc command : #transcode{vcodec=h264,acodec=mpga,ab=128,channels=2,samplerate=44100,scodec=none}

    &#xA;

    I need help figuring out what the gstreamer equivalent is.

    &#xA;

    Thank you.

    &#xA;

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