Carl Eugen Hoyos <[email protected]> added the comment:
Two samples uploaded to samples/V-codecs/qnap. Attached patch improves the
situation for video (audio is really missing with libavformat).
file reports:
RIFF (little-endian) data, AVI, 352 x 288, 30.00 fps, video:
(Current FFmpeg reports the size as 94x1819440243)
Works fine with mplayer -demuxer avi -vc +ffodivx (no artefacts, A/V in sync):
...
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
VIDEO: [] 0x0 0bpp 30.000 fps 1012.9 kbps (123.6 kbyte/s)
==========================================================================
Forced video codec: +ffodivx
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
==========================================================================
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 8000 Hz, 1 ch, s16le, 128.0 kbit/100.00% (ratio: 16000->16000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
The following two lines are printed for every few frames:
[mpeg4 @ 0x89a20a0]header damaged
Error while decoding frame!
----------
status: new -> open
substatus: new -> open
________________________________________________
FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/issue2324>
________________________________________________
Index: libavformat/riff.c
===================================================================
--- libavformat/riff.c (Revision 25569)
+++ libavformat/riff.c (Arbeitskopie)
@@ -82,6 +82,7 @@
{ CODEC_ID_MPEG4, MKTAG('U', 'L', 'D', 'X') },
{ CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'V') },
{ CODEC_ID_MPEG4, MKTAG('S', 'I', 'P', 'P') }, /* Samsung SHR-6040 */
+ { CODEC_ID_MPEG4, 0x0038 }, /* qnap */
{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
{ CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') },
{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
