[FFmpeg-devel] [PATCH] libavformat/cache: don't treat 0 as EOF libavformat/aviobuf: don't treat 0 as EOF libavformat/avio: retry_transfer_wrapper: don't treat 0 as EOF

[James Almer]

On 10/15/2017 9:38 PM, Michael Niedermayer wrote:
> On Sat, Oct 14, 2017 at 07:27:34PM +0200, Daniel Kucera wrote:
>> transfer_func variable passed to retry_transfer_wrapper
>> are h->prot->url_read and h->prot->url_write functions.
>> These need to return EOF or other error properly.
>> In case of returning >= 0, url_read/url_write is retried
>> until error is returned.
>>
>> Signed-off-by: Daniel Kucera <daniel.kucera at gmail.com>
>> ---
>>  libavformat/avio.c    |  6 ++++--
>>  libavformat/aviobuf.c | 20 ++++++++++++--------
>>  libavformat/cache.c   |  4 ++--
>>  3 files changed, 18 insertions(+), 12 deletions(-)
> 
> This changes:
> ./ffmpeg -y -i 'concat:matrixbench_mpeg2.mpg|matrixbench_mpeg2.mpg' -vsync 0 -an file.avi

In case he doesn't have this sample:
http://samples.ffmpeg.org/benchmark/testsuite1/matrixbench_mpeg2.mpg

Basically, with the patch applied the above command doesn't concatenate
the input as requested.